EduSahara™ Assignment
Name : Cyclic Quadrilateral
Chapter : Circles
Grade : CBSE Grade IX
License : Non Commercial Use
Question
1
1.
O is the centre of the circle. If ∠COE = 89°, find ∠B
(i)
44.5°
(ii)
74.5°
(iii)
54.5°
(iv)
59.5°
(v)
49.5°
Question
2
2.
O is the centre of the circle. If ∠KLM = 117°, find ∠MON
(i)
59°
(ii)
69°
(iii)
84°
(iv)
54°
(v)
64°
Question
3
3.
O is the centre of the circle and ∠GDF = 35°, find ∠DEF
(i)
135°
(ii)
130°
(iii)
125°
(iv)
140°
(v)
155°
Question
4
4.
O is the centre of the circle. If ∠FDG = 35° and ∠DFE = 21°, find ∠EDF
(i)
49°
(ii)
44°
(iii)
34°
(iv)
39°
(v)
64°
Question
5
5.
In the given figure, O is the centre of the circle and JM is a diameter. If ∠JMN = 64° and ∠KML = 35°, find ∠MJL
(i)
34°
(ii)
59°
(iii)
44°
(iv)
39°
(v)
29°
Question
6
6.
In the given figure, O is the centre of the circle and chord JK is equal to chord KL and KN is a diameter. If ∠JNK = 22°, find ∠NML
(i)
117°
(ii)
127°
(iii)
142°
(iv)
122°
(v)
112°
Question
7
7.
In the given figure, O is the centre of the circle and chord EF is equal to chord FG and FI is a diameter. If ∠IEO = 26° and ∠GHI = 116°, find ∠EFG
(i)
128°
(ii)
158°
(iii)
143°
(iv)
133°
(v)
138°
Question
8
8.
In the given figure, O is the centre of the circle , chord IJ is equal to chord JK and HJ is a diameter. If ∠KHJ = 47° find ∠IJK
(i)
96°
(ii)
86°
(iii)
116°
(iv)
101°
(v)
91°
Question
9
9.
In the given figure, O is the centre of the circle. If ∠DOE = 108° and ∠EFH = 67°, find ∠GDO
(i)
41°
(ii)
31°
(iii)
46°
(iv)
61°
(v)
36°
Question
10
10.
In the given figure, O is the centre of the circle. If ∠HOI = 62° and ∠IJL = 104°, find ∠KHO
(i)
45°
(ii)
75°
(iii)
60°
(iv)
50°
(v)
55°
Question
11
11.
In the given figure, O is the centre of the circle. If ∠HFG = 70° and ∠DEH = 79°, find ∠FHG
(i)
61°
(ii)
31°
(iii)
36°
(iv)
41°
(v)
46°
Question
12
12.
In the given figure, O is the centre of the circle. If ∠GHK = 85°, find ∠IJK
(i)
95°
(ii)
90°
(iii)
85°
(iv)
100°
(v)
115°
Question
13
13.
In the given figure, O is the centre of the circle. If ∠KLI = 78°, find ∠IJK
(i)
117°
(ii)
107°
(iii)
102°
(iv)
112°
(v)
132°
Question
14
14.
In the given figure, O is the centre of the circle and BE is a diameter. If ∠DEA = 90° and ∠ABE = 65°, find ∠BCD
(i)
145°
(ii)
125°
(iii)
130°
(iv)
120°
(v)
115°
Question
15
15.
In the given figure, O is the centre of the circle and CF is a diameter. If ∠DEF = 130°, find ∠DBC
(i)
50°
(ii)
55°
(iii)
40°
(iv)
45°
(v)
70°
Question
16
16.
In the given figure, O is the centre of the circle and GI is a diameter. If ∠FOI = 108° and ∠OIH = 60°, find ∠GHF + ∠HGI
(i)
96°
(ii)
81°
(iii)
66°
(iv)
71°
(v)
76°
Question
17
17.
In the given figure, O is the centre of the circle. If ∠IJK = 124.5°, find ∠KOI + ∠IHK
(i)
334.5°
(ii)
314.5°
(iii)
309.5°
(iv)
319.5°
(v)
304.5°
Question
18
18.
In the given figure, O is the centre of the circle. If ∠DEH = 119° and ∠EFG = 112°, find ∠FIG
(i)
81°
(ii)
66°
(iii)
61°
(iv)
56°
(v)
51°
Question
19
19.
In the given figure, O is the centre of the circle . If ∠EHF = 78° and ∠EDG = 63°, find ∠DIE
(i)
39°
(ii)
29°
(iii)
34°
(iv)
24°
(v)
54°
Question
20
20.
In the given figure, O is the centre and BF is a diameter of the circle and chord BC is equal to chord EF. If ∠CAE = 42°, find ∠EAF + ∠CDE
(i)
172°
(ii)
177°
(iii)
192°
(iv)
167°
(v)
162°
Question
21
21.
In the given figure, O is the centre of the circle and GI is the tangent at H. If ∠HIJ = 51°,∠IHJ = 30°, find ∠LHG
(i)
86°
(ii)
91°
(iii)
96°
(iv)
111°
(v)
81°
Question
22
22.
In the given figure, O is the centre of the circle. If ∠LJK = 53.5°, find reflex ∠KOI
(i)
253°
(ii)
268°
(iii)
263°
(iv)
258°
(v)
283°
Question
23
23.
In the given figure, a pentagon is inscribed in a circle with centre O. Given FG = GH = HI and ∠FGH = 102°. Find ∠FEG
(i)
44°
(ii)
54°
(iii)
69°
(iv)
39°
(v)
49°
Question
24
24.
In the given figure, a pentagon is inscribed in a circle with centre O. Given FG = GH = HI and ∠FGH = 124°. Find ∠FEI
(i)
94°
(ii)
114°
(iii)
99°
(iv)
84°
(v)
89°
Question
25
25.
In the given figure, a pentagon is inscribed in a circle with centre O. Given GH = HI = IJ and ∠GHI = 114°. Find ∠IOJ
(i)
71°
(ii)
66°
(iii)
81°
(iv)
76°
(v)
96°
Question
26
26.
In the given figure, a hexagon is inscribed in a circle with centre O. Given CD = DE = EF and ∠FGH = 139.41°. Find ∠CGH
(i)
59.41°
(ii)
49.41°
(iii)
64.41°
(iv)
79.41°
(v)
54.41°
Question
27
27.
In the given figure, a hexagon is inscribed in a circle with centre O. Given GH = HI = IJ and ∠JKL = 131.07°. Find ∠LGH
(i)
108.93°
(ii)
113.93°
(iii)
123.93°
(iv)
118.93°
(v)
138.93°
Question
28
28.
In the given figure, a pentagon is inscribed in a circle with centre O. Given AB = BC = CD , ∠BCD = 120° and ∠EAB = 104°. Find ∠ABC
(i)
150°
(ii)
130°
(iii)
135°
(iv)
120°
(v)
125°
Question
29
29.
In the given figure, a pentagon is inscribed in a circle with centre O. Given AB = BC = CD , ∠BCD = 119° and ∠EAB = 119°. Find ∠CDE
(i)
96.5°
(ii)
91.5°
(iii)
101.5°
(iv)
121.5°
(v)
106.5°
Question
30
30.
In the given figure, a pentagon is inscribed in a circle with centre O. Given AB = BC = CD , ∠BCD = 107° and ∠EAB = 113°. Find ∠AED
(i)
139.5°
(ii)
124.5°
(iii)
114.5°
(iv)
119.5°
(v)
109.5°
Question
31
31.
In the given figure, a pentagon is inscribed in a circle with centre O. Given AB = BC = CD , ∠BCD = 105° and ∠EAB = 113°. Find ∠EAD
(i)
53°
(ii)
38°
(iii)
68°
(iv)
43°
(v)
48°
Question
32
32.
In the given figure, O is the centre of the circle. FG is a diameter of the circle and HI is equal to radius. Find ∠FJG
(i)
75°
(ii)
90°
(iii)
60°
(iv)
65°
(v)
70°
Question
33
33.
In the given figure, O is the centre of the circle. If ∠FIG = 73° and ∠FEH = 61°, find ∠EHG
(i)
61°
(ii)
76°
(iii)
46°
(iv)
51°
(v)
56°
Question
34
34.
Which of the following statements are true?
a)
If a parallelogram is cyclic, it is a rectangle.
b)
If a trapezium is cyclic, it is a rectangle.
c)
If a rhombus is cyclic, it is a square.
d)
If a kite is cyclic, it is a square.
e)
A cyclic quadrilateral is a regular polygon.
(i)
{d,c}
(ii)
{b,a}
(iii)
{d,c,a}
(iv)
{a,c}
(v)
{e,b,a}
Question
35
35.
Which of the following are cyclic quadrilaterals?
a)
parallelogram
b)
rhombus
c)
square
d)
rectangle
e)
triangle
f)
trapezium
(i)
{c,d}
(ii)
{e,f,c}
(iii)
{b,d}
(iv)
{a,d,c}
(v)
{a,c}
Question
36
36.
Which of the following statements are true?
a)
It is always possible to inscribe a circle in a quadrilateral.
b)
If a circle can be inscribed in a quadrilateral, it must be a kite.
c)
If a circle can be inscribed in a quadrilateral, the sum of the lengths of a pair of opposite sides is equal to the other pair.
d)
If a circle can be inscribed in a quadrilateral, then it must be a square.
e)
It is always possible to inscribe a circle in a regular polygon.
(i)
{c,e}
(ii)
{d,a,c}
(iii)
{b,e}
(iv)
{a,c}
(v)
{b,e,c}
Question
37
37.
Which of the following statements are true?
a)
Angles in the opposite segments are supplementary.
b)
Angles in the same segment are equal.
c)
Angles subtended by equal length arcs in two circles are equal.
d)
Angles in the opposite segments are complementary.
(i)
{d,b}
(ii)
{c,a}
(iii)
{a,b}
(iv)
{c,d,a}
(v)
{c,b,a}
Question
38
38.
The opposite angles in a cyclic quadrilateral are
(i)
linear pair
(ii)
complementary
(iii)
supplementary
(iv)
equal
Question
39
39.
In the given figure, O is the centre of the circle. If ∠JKO = 22° and ∠OMJ = 37°, find ∠KLM
(i)
151°
(ii)
126°
(iii)
136°
(iv)
121°
(v)
131°
Question
40
40.
In the given figure, O is the centre of the circle. If ∠GHO = 31° and ∠OJG = 20°, find ∠HOJ
(i)
132°
(ii)
112°
(iii)
107°
(iv)
117°
(v)
102°
Question
41
41.
In the given figure, GHIJ is a cyclic quadrilateral. If ∠GIH = 35° and ∠IJH = 36°, find ∠GHI
(i)
139°
(ii)
114°
(iii)
109°
(iv)
119°
(v)
124°
Question
42
42.
In the given figure, EFGH is a cyclic quadrilateral. If ∠EGF = 38° and ∠GHF = 45°, find ∠EHG
(i)
83°
(ii)
113°
(iii)
88°
(iv)
93°
(v)
98°
Question
43
43.
In the given figure, EFGHIJ is a regular hexagon. Find ∠EGF
(i)
35°
(ii)
40°
(iii)
45°
(iv)
30°
(v)
60°
Question
44
44.
In the given figure, FGHIJK is a regular hexagon. Find ∠FIH
(i)
90°
(ii)
65°
(iii)
60°
(iv)
70°
(v)
75°
Question
45
45.
In the given figure, FGHI is a cyclic quadrilateral. If ∠FGI = 64° and ∠GHF = 49°, find ∠IFG
(i)
82°
(ii)
67°
(iii)
97°
(iv)
77°
(v)
72°
Question
46
46.
In the given figure, ∠DFG = 12° and ∠DHG = 25°, find ∠FDG
(i)
83°
(ii)
68°
(iii)
53°
(iv)
63°
(v)
58°
Question
47
47.
In the given figure, ∠IKL = 11° and ∠IML = 30°, find ∠JLI
(i)
84°
(ii)
109°
(iii)
79°
(iv)
89°
(v)
94°
Question
48
48.
In the given figure, DE , EF , FG and GH are chords and DG , EH are diameters passing through the centre O. If ∠DOE = 76°. Find ∠EFG
(i)
128°
(ii)
138°
(iii)
143°
(iv)
133°
(v)
158°
Question
49
49.
In the given figure, CDEFGH is a regular hexagon inscribed in a circle with centre O. Which of the following are true?
a)
∠DGE = 30°
b)
∠CED = 60°
c)
∠COH = 60°
d)
∠HFE = 90°
e)
∠DOF = 120°
(i)
{b,a}
(ii)
{a,c,d,e}
(iii)
{b,c}
(iv)
{b,e,a}
(v)
{b,d}
Question
50
50.
In the given figure, FGHIJ is a regular pentagon . Find ∠FJH
(i)
77°
(ii)
82°
(iii)
102°
(iv)
87°
(v)
72°
Question
51
51.
In the given figure, BD is a chord which is equal to the radius of the circle. Find ∠E and ∠C
(i)
60° & 120°
(ii)
40° & 140°
(iii)
30° & 150°
(iv)
45° & 135°
(v)
50° & 130°
Question
52
52.
In the given figure, KLMO is a cyclic quadrilateral where LM and LK are produced to N and J respectively. If ∠JKO = 90°, find ∠NMO
(i)
120°
(ii)
105°
(iii)
95°
(iv)
90°
(v)
100°
Question
53
53.
In the given figure, ∠A = 79° , ∠D = 84° and ∠E = 95°, find ∠DBC
(i)
93°
(ii)
83°
(iii)
78°
(iv)
108°
(v)
88°
Question
54
54.
Which of the following statements are true?
a)
A cyclic kite is a square.
b)
A cyclic rhombus is a square.
c)
A cyclic parallelogram is a rhombus.
d)
A cyclic trapezium is a rectangle.
e)
A cyclic parallelogram is a rectangle.
(i)
{b,e}
(ii)
{d,a,b}
(iii)
{a,b}
(iv)
{c,e,b}
(v)
{c,e}
Question
55
55.
Which of the following statements are true?
a)
The exterior angle of a quadrilateral and its interior opposite angle are supplementary.
b)
An isosceles trapezium is cyclic.
c)
Either pair of opposite angles of a cyclic quadrilateral are supplementary.
d)
A quadrilateral in which the diagonals are equal and bisect each other is cyclic.
e)
All parallelograms are cyclic.
(i)
{b,c,d}
(ii)
{a,b,c}
(iii)
{a,e,d}
(iv)
{a,b}
(v)
{e,c}
Question
56
56.
Which of the following are not cyclic quadrilaterals?
a)
square
b)
isosceles trapezium
c)
rectangle
d)
kite
e)
rhombus
(i)
{b,e}
(ii)
{a,d}
(iii)
{c,a,d}
(iv)
{d,e}
(v)
{b,e,d}
Question
57
57.
If EFGH is a cyclic quadrilateral and ∠E − ∠G = 16°, then ∠G
(i)
87°
(ii)
92°
(iii)
82°
(iv)
112°
(v)
97°
Question
58
58.
If IJKL is a cyclic parallelogram, then ∠L
(i)
100°
(ii)
120°
(iii)
90°
(iv)
95°
(v)
105°
Question
59
59.
HIJKLM is a hexagon inscribed in a circle. Given ∠HIJ = 122° & ∠JKL = 125°, find ∠LMH
(i)
143°
(ii)
118°
(iii)
128°
(iv)
113°
(v)
123°
Question
60
60.
In the given figure, EFGH is a parallelogram. The circumcircle of △EFG cuts GH at I. Given ∠EHI = 70°, find ∠HEI
(i)
40°
(ii)
55°
(iii)
50°
(iv)
70°
(v)
45°
Question
61
61.
In the given figure, MK and NJ are two lines passing through the points of intersection of the two circles at L and I. If ∠NML = 81° , find ∠LKJ
(i)
104°
(ii)
109°
(iii)
114°
(iv)
99°
(v)
129°
Question
62
62.
In the given figure, find the angles of the quadrilateral.
(i)
A
=
96°
,
B
=
90°
,
C
=
84°
,
D
=
90°
(ii)
A
=
97°
,
B
=
90°
,
C
=
83°
,
D
=
90°
(iii)
A
=
94°
,
B
=
90°
,
C
=
86°
,
D
=
90°
(iv)
A
=
95°
,
B
=
90°
,
C
=
85°
,
D
=
90°
(v)
A
=
98°
,
B
=
90°
,
C
=
82°
,
D
=
90°
Question
63
63.
In the given figure, find the remaining angles of the quadrilateral.
(i)
F
=
89°
,
I
=
85°
(ii)
F
=
90°
,
I
=
86°
(iii)
F
=
93°
,
I
=
89°
(iv)
F
=
91°
,
I
=
87°
(v)
F
=
92°
,
I
=
88°
Question
64
64.
In the given figure, ∠OJI = 30° & ∠OIF = 41°, find ∠HGF
(i)
48°
(ii)
53°
(iii)
68°
(iv)
38°
(v)
43°
Assignment Key
1) (i)
2) (iv)
3) (iii)
4) (iii)
5) (v)
6) (v)
7) (i)
8) (ii)
9) (ii)
10) (i)
11) (ii)
12) (iii)
13) (iii)
14) (v)
15) (iii)
16) (iii)
17) (v)
18) (v)
19) (iv)
20) (v)
21) (v)
22) (i)
23) (iv)
24) (iv)
25) (ii)
26) (ii)
27) (i)
28) (iv)
29) (ii)
30) (v)
31) (ii)
32) (iii)
33) (iii)
34) (iv)
35) (i)
36) (i)
37) (iii)
38) (iii)
39) (iv)
40) (v)
41) (iii)
42) (i)
43) (iv)
44) (iii)
45) (ii)
46) (iii)
47) (iii)
48) (i)
49) (ii)
50) (v)
51) (iii)
52) (iv)
53) (iii)
54) (i)
55) (i)
56) (iv)
57) (iii)
58) (iii)
59) (iv)
60) (i)
61) (iv)
62) (i)
63) (iv)
64) (iv)
