EduSahara™ Assignment
Name : Angle Computation
Chapter : Quadrilaterals
Grade : SSC Grade IX
License : Non Commercial Use
Question
1
1.
Find the missing angle in the given quadrilateral
(i)
59.11°
(ii)
54.11°
(iii)
44.11°
(iv)
49.11°
(v)
74.11°
Question
2
2.
Find the missing angle in the given trapezium
(i)
123.98°
(ii)
103.98°
(iii)
98.98°
(iv)
93.98°
(v)
108.98°
Question
3
3.
Find the missing angle in the given parallelogram
(i)
140.6°
(ii)
125.6°
(iii)
115.6°
(iv)
110.6°
(v)
120.6°
Question
4
4.
Find the missing angle in the given rhombus
(i)
106.53°
(ii)
131.53°
(iii)
111.53°
(iv)
116.53°
(v)
101.53°
Question
5
5.
The measures of three angles of a quadrilateral are
66.87°
,
139.49°
and
62.96°
. Find the fourth angle
(i)
105.68°
(ii)
100.68°
(iii)
95.68°
(iv)
120.68°
(v)
90.68°
Question
6
6.
Sum of the interior angles in a quadrilateral is
(i)
390°
(ii)
360°
(iii)
370°
(iv)
375°
(v)
365°
Question
7
7.
In parallelogram ABCD, if ∠A = 27.13°, then find the value of ∠D
(i)
152.87°
(ii)
154.87°
(iii)
150.87°
(iv)
151.87°
(v)
153.87°
Question
8
8.
If the opposite angles of a parallelogram are supplementary, the measure of each of its angles is
(i)
91°
(ii)
90°
(iii)
92°
(iv)
88°
(v)
89°
Question
9
9.
If ABCD is an isosceles trapezium, ∠D =
(i)
∠B
(ii)
90°
(iii)
∠A
(iv)
∠C
Question
10
10.
LMNO is a rhombus in which ∠L = 120° .
MO
is the diagonal. Then △LMN is
(i)
an obtuse angled triangle
(ii)
a scalene triangle
(iii)
an equilateral triangle
(iv)
None of these
(v)
an isosceles triangle
Question
11
11.
CDEF is a rhombus in which ∠C = 97° .
DF
is the diagonal. Then △CDE is
(i)
an isosceles triangle
(ii)
an obtuse angled triangle
(iii)
a scalene triangle
(iv)
an equilateral triangle
(v)
None of these
Question
12
12.
The angles of a quadrilateral ABCD are in the ratio 15 : 12 : 6 : 27. Find the measure of each angle of the quadrilateral.
(i)
A
=
91°
,
B
=
71°
,
C
=
38°
,
D
=
160°
(ii)
A
=
88°
,
B
=
74°
,
C
=
35°
,
D
=
163°
(iii)
A
=
90°
,
B
=
72°
,
C
=
36°
,
D
=
162°
(iv)
A
=
92°
,
B
=
71°
,
C
=
34°
,
D
=
163°
(v)
A
=
89°
,
B
=
70°
,
C
=
37°
,
D
=
164°
Question
13
13.
Two adjacent angles of a parallelogram MNOP are in the ratio 3 : 7. Find the measure of each of its angles.
(i)
M
=
54°
,
N
=
126°
,
O
=
54°
,
P
=
126°
(ii)
M
=
53°
,
N
=
124°
,
O
=
55°
,
P
=
128°
(iii)
M
=
52°
,
N
=
128°
,
O
=
53°
,
P
=
127°
(iv)
M
=
55°
,
N
=
125°
,
O
=
56°
,
P
=
124°
(v)
M
=
56°
,
N
=
125°
,
O
=
52°
,
P
=
127°
Question
14
14.
In the adjoining figure,
KLMN
is a parallelogram in which
∠NKM = 31.25°
,
∠MKL = 25.63°
,
∠NOM = 102.49°
. Calculate
∠KLN
(i)
49.88°
(ii)
52.88°
(iii)
50.88°
(iv)
53.88°
(v)
51.88°
Question
15
15.
In the adjoining figure,
BCDE
is a parallelogram in which
∠EBD = 31.39°
,
∠DBC = 21.17°
,
∠EFD = 114.12°
. Calculate
∠DEC
(i)
43.71°
(ii)
46.71°
(iii)
42.71°
(iv)
44.71°
(v)
45.71°
Question
16
16.
In the adjoining figure,
MNOP
is a parallelogram in which
∠PMO = 37.85°
,
∠OMN = 26.17°
,
∠PQO = 109.59°
. Calculate
∠NOM
(i)
36.85°
(ii)
39.85°
(iii)
35.85°
(iv)
38.85°
(v)
37.85°
Question
17
17.
In the adjoining figure,
DEFG
is a parallelogram in which
∠GDF = 51.49°
,
∠FDE = 26.99°
,
∠GHF = 120.27°
. Calculate
∠GEF
(i)
70.77°
(ii)
69.77°
(iii)
68.77°
(iv)
66.77°
(v)
67.77°
Question
18
18.
In the adjoining figure,
HIJK
is a rectangle.
If
∠JHI = 49.9°
, find
∠IJH
(i)
41.10°
(ii)
39.10°
(iii)
40.10°
(iv)
38.10°
(v)
42.10°
Question
19
19.
Three angles of quadrilateral measure 39.4°, 145.85° and 27.27° respectively. Find the measure of the fourth angle
(i)
148.48°
(ii)
149.48°
(iii)
145.48°
(iv)
146.48°
(v)
147.48°
Question
20
20.
Three angles of a quadrilateral are equal and the fourth angle measure 121.01°. What is the measure of each of the equal angles?
(i)
81.66°
(ii)
77.66°
(iii)
78.66°
(iv)
80.66°
(v)
79.66°
Question
21
21.
Two angles of a quadrilateral are of measure 110.74° and 89.58° respectively and the other two angles are equal. Find the measure of each of the equal angles.
(i)
81.84°
(ii)
79.84°
(iii)
77.84°
(iv)
78.84°
(v)
80.84°
Question
22
22.
A quadrilateral has three acute angles, each measuring 79°. What is the measure of its fourth angle?
(i)
124.00°
(ii)
125.00°
(iii)
121.00°
(iv)
122.00°
(v)
123.00°
Question
23
23.
One angle of a parallelogram measures
D
=
91.04°
.
Find the measure of each of its remaining angles.
(i)
E
=
86.96°
,
F
=
89.04°
,
G
=
86.96°
(ii)
E
=
88.96°
,
F
=
91.04°
,
G
=
88.96°
(iii)
E
=
90.96°
,
F
=
93.04°
,
G
=
90.96°
(iv)
E
=
87.96°
,
F
=
90.04°
,
G
=
87.96°
(v)
E
=
89.96°
,
F
=
92.04°
,
G
=
89.96°
Question
24
24.
Two adjacent angles of a parallelogram are in the ratio
23 : 67
.
Find the measure of each of its angles.
(i)
A
=
45°
,
B
=
132°
,
C
=
47°
,
D
=
136°
(ii)
A
=
44°
,
B
=
136°
,
C
=
45°
,
D
=
135°
(iii)
A
=
48°
,
B
=
133°
,
C
=
44°
,
D
=
135°
(iv)
A
=
47°
,
B
=
133°
,
C
=
48°
,
D
=
132°
(v)
A
=
46°
,
B
=
134°
,
C
=
46°
,
D
=
134°
Question
25
25.
In the figure given below,
NOPQ
is a rectangle.
Find the values of x and y
(i)
x
=
38.88°
,
y
=
76.76°
(ii)
x
=
36.88°
,
y
=
74.76°
(iii)
x
=
39.88°
,
y
=
77.76°
(iv)
x
=
35.88°
,
y
=
73.76°
(v)
x
=
37.88°
,
y
=
75.76°
Question
26
26.
In the figure given below,
EFGH
is a rectangle.
Find the values of x and y
(i)
x
=
28.96°
,
y
=
57.04°
(ii)
x
=
31.96°
,
y
=
60.04°
(iii)
x
=
30.96°
,
y
=
59.04°
(iv)
x
=
32.96°
,
y
=
61.04°
(v)
x
=
29.96°
,
y
=
58.04°
Question
27
27.
In the figure given below,
IJKL
is a rhombus.
Find the values of x and y
(i)
x
=
39.78°
,
y
=
39.78°
(ii)
x
=
40.78°
,
y
=
40.78°
(iii)
x
=
37.78°
,
y
=
37.78°
(iv)
x
=
38.78°
,
y
=
38.78°
(v)
x
=
36.78°
,
y
=
36.78°
Question
28
28.
In the figure given below,
EFGH
is a rhombus.
Find the values of x and y
(i)
x
=
42.63°
,
y
=
42.63°
(ii)
x
=
39.63°
,
y
=
39.63°
(iii)
x
=
41.63°
,
y
=
41.63°
(iv)
x
=
43.63°
,
y
=
43.63°
(v)
x
=
40.63°
,
y
=
40.63°
Question
29
29.
In the figure given below,
IJKL
is a rhombus.
Find the values of x and y
(i)
x
=
13.92°
,
y
=
72.08°
(ii)
x
=
16.92°
,
y
=
75.08°
(iii)
x
=
15.92°
,
y
=
74.08°
(iv)
x
=
17.92°
,
y
=
76.08°
(v)
x
=
14.92°
,
y
=
73.08°
Question
30
30.
One of the diagonals of a rhombus is equal to one of its sides. Find the angles of the rhombus
(i)
A
=
59°
,
B
=
118°
,
C
=
61°
,
D
=
122°
(ii)
A
=
61°
,
B
=
119°
,
C
=
62°
,
D
=
118°
(iii)
A
=
60°
,
B
=
120°
,
C
=
60°
,
D
=
120°
(iv)
A
=
62°
,
B
=
119°
,
C
=
58°
,
D
=
121°
(v)
A
=
58°
,
B
=
122°
,
C
=
59°
,
D
=
121°
Question
31
31.
In the adjoining figure,
PQRS
is a trapezium in which
PQ
∥
RS
.
If
x = 103.45°
and
y = 152.67°
,
find the measures of
∠P
and
∠Q
.
(i)
P
=
26.33°
,
Q
=
75.55°
(ii)
P
=
29.33°
,
Q
=
78.55°
(iii)
P
=
25.33°
,
Q
=
74.55°
(iv)
P
=
28.33°
,
Q
=
77.55°
(v)
P
=
27.33°
,
Q
=
76.55°
Question
32
32.
In the adjoining figure,
ABCD
is a kite in which
AB
=
DA
,
BC
=
CD
and the diagonals
BD
and
AC
intersect at
O
.
If ∠OCD = 53.13° and ∠ABO = 57.59°, find the measure of each of the angles marked a,b,c,d and e.
(i)
a = 36.87° , b = 33.41° , c = 56.59° , d = 38.87° , e = 51.13°
(ii)
a = 36.87° , b = 33.41° , c = 57.59° , d = 36.87° , e = 53.13°
(iii)
a = 36.87° , b = 32.41° , c = 57.59° , d = 36.87° , e = 53.13°
(iv)
a = 36.87° , b = 33.41° , c = 56.59° , d = 36.87° , e = 53.13°
(v)
a = 36.87° , b = 33.41° , c = 56.59° , d = 38.87° , e = 53.13°
Question
33
33.
In the adjoining figure, side KL of parallelogram KLMN has been produced to O. If ∠MLO = 42.97° , find the measure of each angle of the parallelogram.
(i)
K
=
43.97°
,
L
=
136.03°
,
M
=
44.97°
,
N
=
135.03°
(ii)
K
=
44.97°
,
L
=
136.03°
,
M
=
40.97°
,
N
=
138.03°
(iii)
K
=
41.97°
,
L
=
135.03°
,
M
=
43.97°
,
N
=
139.03°
(iv)
K
=
42.97°
,
L
=
137.03°
,
M
=
42.97°
,
N
=
137.03°
(v)
K
=
40.97°
,
L
=
139.03°
,
M
=
41.97°
,
N
=
138.03°
Question
34
34.
In the adjoining figure,
CDEF
is a parallelogram and
GH
is such that
GH
∥
CE
If
∠CFG = 23.22°
and
∠EFH = 36.15°
,
find the measure of
∠CDE
.
(i)
119.64°
(ii)
122.64°
(iii)
118.64°
(iv)
120.64°
(v)
121.64°
Question
35
35.
In the adjoining figure, LMNO is a square. A line segment OQ cuts the side MN at Q and the diagonal LN at P such that ∠OPN = 96.39° and ∠PQN = x°. Find the value of x .
(i)
51.39°
(ii)
53.39°
(iii)
50.39°
(iv)
49.39°
(v)
52.39°
Question
36
36.
In the adjoining figure, LMNO is a rhombus and △PON is an equilateral triangle. P and M are on opposite sides of NO. If ∠OLM = 87.8°, find the values of x and y .
(i)
x
=
31°
,
y
=
17.1°
(ii)
x
=
30°
,
y
=
16.1°
(iii)
x
=
29°
,
y
=
15.1°
(iv)
x
=
32°
,
y
=
18.1°
(v)
x
=
28°
,
y
=
14.1°
Question
37
37.
In the adjoining figure, equilateral △IHJ surmounts square FGHI. If HJG = x°, find the value of x.
(i)
16°
(ii)
17°
(iii)
15°
(iv)
14°
(v)
13°
Question
38
38.
In the adjoining figure,
ABCD
is a rhombus whose diagonals intersect at
O
.
If
∠OAB
:
∠ABO
=
5 : 10
,
find the angles of
△OAB
.
(i)
O
=
90°
,
A
=
28°
,
B
=
62°
(ii)
O
=
88°
,
A
=
30°
,
B
=
62°
(iii)
O
=
92°
,
A
=
30°
,
B
=
58°
(iv)
O
=
90°
,
A
=
30°
,
B
=
60°
(v)
O
=
88°
,
A
=
32°
,
B
=
60°
Question
39
39.
In the given figure,
LMNO
is a rectangle whose diagonals intersect at
P
.
Diagonal
MO
is produced to
T
and
∠NMT =
132.88°
. Find the angles of
△PNO
.
(i)
P
=
92.24°
,
N
=
44.88°
,
O
=
42.88°
(ii)
P
=
96.24°
,
N
=
42.88°
,
O
=
40.88°
(iii)
P
=
94.24°
,
N
=
42.88°
,
O
=
42.88°
(iv)
P
=
92.24°
,
N
=
42.88°
,
O
=
44.88°
(v)
P
=
94.24°
,
N
=
40.88°
,
O
=
44.88°
Question
40
40.
In the given figure,
GHIJ
is a kite whose diagonals intersect at
K
.
If
∠JGH = 114.59°
and
∠GHI = 94.35°
, calculate
∠KJG
and
∠KIJ
.
(i)
x
=
34.7°
,
y
=
30.36°
(ii)
x
=
33.7°
,
y
=
29.36°
(iii)
x
=
32.7°
,
y
=
28.36°
(iv)
x
=
30.7°
,
y
=
26.36°
(v)
x
=
31.7°
,
y
=
27.36°
Question
41
41.
△RQN
is an equilateral triangle in a square
NOPQ
.
If
NP
and
RQ
intersect at
S
,
then find the value of x.
(i)
75°
(ii)
77°
(iii)
73°
(iv)
74°
(v)
76°
Question
42
42.
In the adjoining figure,
P
is a point in the interior of
∠RNS
.
If
PO
⟂
NR
and
PQ
⟂
NS
and
∠RNS = 45°
,
find the measure of x .
(i)
223°
(ii)
224°
(iii)
225°
(iv)
227°
(v)
226°
Question
43
43.
In the given figure, FGHI is a parallelogram.
If
FU
and
GU
are bisector of
∠F
&
∠G
, find
∠U
(i)
88°
(ii)
89°
(iii)
90°
(iv)
91°
(v)
92°
Question
44
44.
In the given figure, CDEF is a parallelogram. S is the mid-point of EF.
DS
bisects
∠D
. If x =
53°
, find angle 'y'.
(i)
36°
(ii)
37°
(iii)
38°
(iv)
39°
(v)
35°
Question
45
45.
In the given figure, CDEF is a quadrilateral. RF and RE are bisectors of ∠F & ∠E meeting at R. Find ∠ERF
(i)
82.5°
(ii)
85.5°
(iii)
83.5°
(iv)
84.5°
(v)
81.5°
Question
46
46.
In the given figure, ABCD is a rhombus. Given x = 51°, find the value of 'y'.
(i)
37°
(ii)
40°
(iii)
39°
(iv)
41°
(v)
38°
Question
47
47.
In the given figure, FGHI is a parallelogram. GI is the diagonal
such that
FI = GI = GH
. Given
∠F = 52°
, find
∠IGH
(i)
75°
(ii)
77°
(iii)
74°
(iv)
76°
(v)
78°
Question
48
48.
In the given figure, EFGH is a parallelogram. EQ and GR are perpendicular to the diagonal FH. Given ∠QEF = 22°, find ∠GHF
(i)
66°
(ii)
70°
(iii)
68°
(iv)
67°
(v)
69°
Question
49
49.
In the given figure, DEFG is a rhombus such that ∠E = 120°. Then △DEG is
(i)
Isosceles triangle
(ii)
Right angled triangle
(iii)
Equilateral triangle
(iv)
Obtuse angled triangle
Question
50
50.
DEFG is a rhombus. N, O, P and Q are mid-points of sides DE, EF, FG and GD. Find ∠OPQ
(i)
90°
(ii)
89°
(iii)
92°
(iv)
88°
(v)
91°
Question
51
51.
In the given figure, HIJK is a parallelogram such that Q is the mid-point of HI and HI = 2KH. Find ∠KQJ
(i)
92°
(ii)
91°
(iii)
89°
(iv)
90°
(v)
88°
Question
52
52.
EFGH is an isosceles trapezium. ET and FT are angular bisector of ∠E & ∠F. If ∠E = 67°, find ∠ETF
(i)
112°
(ii)
115°
(iii)
114°
(iv)
111°
(v)
113°
Question
53
53.
In the given figure, DEFG is a parallelogram. The bisector of the angles D, E, F & G intersect at T, U, V & W to form a quadrilateral. Find ∠WTU
(i)
90°
(ii)
91°
(iii)
88°
(iv)
92°
(v)
89°
Assignment Key
1) (iii)
2) (iv)
3) (iv)
4) (v)
5) (v)
6) (ii)
7) (i)
8) (ii)
9) (iv)
10) (iii)
11) (i)
12) (iii)
13) (i)
14) (v)
15) (iv)
16) (v)
17) (iii)
18) (iii)
19) (v)
20) (v)
21) (ii)
22) (v)
23) (ii)
24) (v)
25) (v)
26) (iii)
27) (iv)
28) (iii)
29) (iii)
30) (iii)
31) (v)
32) (iii)
33) (iv)
34) (iv)
35) (i)
36) (ii)
37) (iii)
38) (iv)
39) (iii)
40) (iii)
41) (i)
42) (iii)
43) (iii)
44) (ii)
45) (iii)
46) (iii)
47) (iv)
48) (iii)
49) (iii)
50) (i)
51) (iv)
52) (v)
53) (i)
