Geometry Quadrilaterals Question for SSC CHSl and MTS
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Question 1: Vertices A, B, C and D of a quadrilateral ABCD lie on a circle.
a)
b)
c)
d)
1) Answer (C)
Solution:
Given,
In a cyclic quadrilateral, opposite angles are supplementary.
3
4
3
Difference between the measures of
= 75
Hence, the correct answer is Option C
Question 2: ABCD is a cyclic quadrilateral such that when sides AB and DC are produced, they meet at E, and sides AD and BC meet at F, when produced. If
a)
b)
c)
d)
2) Answer (D)
Solution:
From triangle AED,
80
ABCD is a cyclic quadrilateral.
Opposite angles in a cyclic quadrilateral is supplementary.
80
From triangle ABF,
100
Hence, the correct answer is Option D
Question 3: ABCD is cyclic quadrilateral in which
a) 120
b) 90
c) 150
d) 60
3) Answer (C)
Solution:
ABCD is cyclic quadrilateral.
Opposite angles in a cyclic quadrilateral are supplementary.
x + 2x = 180
3x = 180
x = 60
5y + y = 180
6y = 180
y = 30
3x – y = 3(60) – 30 = 150
Hence, the correct answer is Option C
Question 4: Triangle ABC is an equilateral triangle. D and E are points on AB and AC respectively such that DE is parallel to BC and is equal to half the length of BC. If AD + CE + BC = 30 cm, then find the perimeter (in cm) of the quadrilateral BCED.
a) 37.5
b) 25
c) 45
d) 35
4) Answer (A)
Solution:
Triangle ABC is an equilateral triangle.
Let the length of BC = 2p
BC = AB = AC = 2p
DE is equal to half the length of BC.
Triangle ABC and triangle ADE are similar triangles.
Similarly, AE = p
and EC = AC – AE = 2p – p = p
AD + CE + BC = 30 cm
p + p + 2p = 30
4p = 30
p =
Perimeter of the quadrilateral BCED = BD + DE + CE + BC
= p + p + p + 2p
= 5p
=
= 37.5 cm
Hence, the correct answer is Option A
Question 5: In the figure, a circle touches all the four sides of a quadrilateral ABCD whose sides AB = 6.5 cm, BC = 5.4 cm and CD = 5.3 cm. The length of AD is:
a) 4.6 cm
b) 5.8 cm
c) 6.2 cm
d) 6.4 cm
5) Answer (D)
Solution:
Given, AB = 6.5 cm, BC = 5.4 cm and CD = 5.3 cm
Let the circle touches AB, BC, CD, DA at T, R, Q, S respectively.
Length of tangents to the circle from an external point are equal.
AT = AS
BT = BR
CQ = CR
DQ = DS
Adding all of the above
AT + BT + CQ + DQ = AS + BR + CR + DS
Hence, the correct answer is Option D
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Question 6: The three medians AX, BY and CZ of
a) 10
b) 12
c) 16
d) 14
6) Answer (A)
Solution:
Given, Area of
The three medians AX, BY and CZ of
The area of six triangles in the above figure are equal and area is equal to one-sixth of the area of triangle ABC.
Area of
=
= 5
Similarly, Area of
Hence, the correct answer is Option A
Question 7: In the given figure, PQRS is a cyclic quadrilateral. What is the measure of the angle PQR if PQ is parallel to SR?
a)
b)
c)
d)
7) Answer (A)
Solution:
In the cyclic quadrilateral PQRS,
Sum of opposite angles = 180
Given, PQ is parallel to SR
RQ is the transversal intersecting the parallel lines PQ and SR
Sum of the interior angles on the same side of the transversal is 180
Hence, the correct answer is Option A
Question 8: ABCD is a cyclic quadrilateral which sides AD and BC are produced to meet at P, and sides DC and AB meet at Q when produced. If
a)
b)
c)
d)
8) Answer (A)
Solution:
In
Question 9: In quadrilateral PQRS, RM
a) 13
b) 15
c) 14
d) 11
9) Answer (B)
Solution:
Area of PQRS = area of
(Area of triangle =
=
=
=
Question 10: Sides AB and DC of cyclic quadrilateral ABCD are produced to meet at E, and sides AD and BCare produced to meet at F. If
a)
b)
c)
d)
10) Answer (C)
Solution:
In ΔADE,
∠ADE=180 − (∠AED + ∠EAD)
= 180 − (38 + 102)
= 40
⇒∠ADC = 40
square ABCD is a cyclic quadrilateral.
∴∠DCB + ∠DAB=180
⇒∠DCB = 180 − ∠DAB
∠DCB = 180 − 102
∠DCB = 78
In ΔDFC,
∠DFC=180 – (∠FDC+∠FCD)
∠DFC = 180 − (40 + 78)
∠DFC = 180 − 118
∠DFC = 62
∠AFB = ∠DFC = 62
Difference between
Question 11: Quadrilateral ABCD circumscribes circle. If AB = 8 cm, BC = 7 cm and CD = 6 cm,then the length of AD is:
a) 6 cm
b) 7.5 cm
c) 7cm
d) 6.8 cm
11) Answer (C)
Solution:
AB = 8 cm
BC = 7 cm
CD = 6 cm
By the property,
AB + CD = BC + AD
8 + 6 = 7 + AC
AC = 14 – 7 = 7 cm
Question 12: ABCD is a cyclic quadrilateral in which AB = 16.5 cm, BC = x cm, CD = 11 cm, AD = 19.8 cm, and BD is bisected by AC at O. What is the value of x ?
a) 12.8 cm
b) 12.4 cm
c) 13.2 cm
d) 13.8 cm
12) Answer (C)
Solution:
ABCD is a cyclic quadrilateral in which AB = 16.5 cm
BC = x cm
CD = 11 cm
AD = 19.8 cm
By the property,
AB⋅BC = AD⋅DC
16.5
16.5
x = 217.8/16.5 = 13.2 cm
Question 13: ABCD is a cyclic quadrilateral. The tangents to the circle at the points A and C on it, intersect at P. If
a)
b)
c)
d)
13) Answer (C)
Solution:
ACD is a cyclic quadrilateral so,
In quadrilateral AOCP-
(
Question 14: ABCD is a cyclic quadrilateral in which AB = 15 cm, BC = 12 cm and CD = 10 cm. If AC bisects BD, then what is the measure of AD?
a) 15 cm
b) 13.5 cm
c) 18 cm
d) 20 cm
14) Answer (C)
Solution:
Given ABCD is a cyclic quadrilateral where AB=15,BC= 12,CD =10
is given below diagram
from the above diagram AC bisects BD
$\triangle is similar \triangle BCD
$\Rightarrow AD = 18 cm
therefore Option (C) 18 cm Ans
Question 15: From a point P which is at a distance of 10 cm from the centre O of a circle of radius 6 cm, a pair of tangents PQ and PR to the circle at point Q and respectively, are drawn. Then the area of the quadrilateral PQOR is equal to
a) 30 sq.cm
b) 40 sq.cm
c) 24 sq.cm
d) 48 sq.cm
15) Answer (D)
Solution:
From the given question we draw the diagram
From the
then area quadrilateral PQOR =
=
=
Question 16: Two equilateral triangles of side
a) 12 cm
b) 14 cm
c) 16 cm
d) i5 cm
16) Answer (D)
Solution:
Given that
We know the area of equilateral triangle =
and on the
then Eq(1) = Eq (2)
$\Rightarrow h = 15 cm Ans
Question 17: ABCD is cyclic quadrilateral. Sides AB and DC, when produced, meet at E, and sides BC and AD, when produced, meet at F. If
a)
b)
c)
d)
17) Answer (A)
Solution:
From the given question we draw the diagram is given below
from the above diagram
then
from the above Equestion (1) and (2)
from the equestion (4) and (5)
then
Question 18: In quadrilateral
a)
b)
c)
d)
18) Answer (C)
Solution:

In quadrilateral
In
Question 19: In a circle with centre O, ABCD isa cyclic quadrilateral and AC is the diameter. Chords AB and CD are produced to meet at E. If
a)
b)
c)
d)
19) Answer (B)
Solution:

By the exterior angle property,