CBSE Class 9 Mathematics Lines and Angles Worksheet Set A

Question. What is the smaller angle between the hour and the minute hand of a clock at 12:20?
(a) 1050
(b) 1100
(c) 1150
(d) 1200

Answer : B

Question. Which of the following could represent the lengths of the sides of the triangle shown below?

(a) 6 units, 8 units, 12 units
(b) 4 units, 6 units, 5 units
(c) 15 units, 9 units, 12 units
(d) 10 units, 8 units, 4 units

Answer : C

Question. The triangle here has side RP equal to side QR. The drawing shown is   not to scale. Which angle of the triangle CAN have a degree measure of 950? 

(a) ∠P
(b) ∠Q
(c) ∠R 
(d) None of them

Answer : C

Question. Shown here are two CONGRUENT scalene triangles. Some of the measurements are given. What is the measure of the angle marked x?

(a) 55^o
(b) 58^o
(c) 65^o
(d) 65^o

Answer : A

Question. The semi perimeter of a triangle is half of the perimeter. For the triangle below the semi-perimeter is (a + b + c)/2.
 What is the ratio of the side of an equilateral triangle to its semi-perimeter? 

(a) 01:02
(b) 01:03
(c) 02:03
(d) 01:06

Answer : C

Question. In an isosceles triangle PQR with PQ = PR, PS is the bisector of angle QPR. QP is extended to T and PU is drawn parallel to QR.
From this, which of the following CANNOT be concluded?

(a) PS is perpendicular to QR.
(b) PU is the bisector of angle TPR.
(c) PS is a median of the triangle.
(d) PR is the bisector of angle UPS.

Answer : D

Question. 4 equilateral triangles of side 1 cm are required to tile the triangle shown 
How many equilateral triangles of side 1cm will be required to cover the rhombus shown?

(a) 9
(b) 18
(c) 24
(d) 36

Answer : B

Question. PQRST is a regular pentagon and O is its centre. 
What is the measure of  OQS?

(a) 18^o
(b) 22. 5^o
(c) 36^o
(d) 54^o

Answer : A

Question. The design given below is made by putting 4 tiles together. 
(The underside of the tiles are plain)
Which set of tiles is the design made of?

Answer : D

Question. What is the perimeter of the triangle shown below? 

(a) 14 centimetres
(b) 24 centimetres
(c) 28 centimetres
(d) We  can't say

Answer : B

Question. A triangle EFG has sides 6 cm, 5 cm and 2 cm. The median EX is drawn as shown.
(The figure shown is not to scale.)
Which of the following could be the length of EX?

(a) 6.1 cm
(b) 5.4 cm
(c) 5 cm
(d) 4.8 cm

Answer : B

Question. A fire engine, standing near a building, extends its ladder to a length of 10 metres to reach a certain window in the building.
What is the height of the window from the ground? 

(a) 6 m
(b) 8 m
(c) 9 m
(d) 11 m

Answer : D

Question. (a, b, c) is known as a Pythagorean triplet if a2 + b2= c2. If (a, b, c) is a Pythagorean triplet, which of the following must also be a Pythagorean triplet?
(a) (a2, b2, c2)
(b)  (3a, 4b, 5c)
(c) (a + 2, b + 2, c + 2)
(d) (7a, 7b, 7c)

Answer : D

Question. In the figure, OP is parallel to base MN of right angled triangle LMN. Also, LO = 3 cm, OM = 6 cm and MN = 15 cm. What is the perimeter (in cm) of trapezium OPNM?

(a) 30
(b) 32
(c) 34
(d) 42

Answer : C

Question. Shown below are two isosceles triangles with the equal sides marked:
Which set of conditions given below is SUFFICIENT for the two triangles to be congruent?

(a)  E = K and    F =  L
(b) EF = KL and EG = KM
(c) FG = LM and E =  K
(d)  E = K = 900

Answer : C

Please click on below link to download CBSE Class 9 Mathematics Lines and Angles Worksheet Set A