9th Construction of Triangle CBSE Guess Paper

Section - A

Q.1 With a ruler and compass which of the following angles cannot be constructed?

(a) 60⁰ (b) 80⁰ (c) 900 105⁰

Q.2 With a ruler and compass which of the following angles can be constructed?

(a) 80⁰ (b) 90⁰ (c) 100⁰ 110⁰

Section - B

Q.3 Construct an angle of 45⁰ at the initial point of a given ray and justify the construction.

Q.4 Construct the following angles and verify by measuring them by a protractor.

(i) 75⁰ (ii) 135⁰

Section - C

Q.5 Construct Triangle PQR with base QR = 3.8 cm and <Q=75⁰ and PQ + PR = 7.9cm

Q.6 Construct a with base Triangle PQ R  a with base QR = 3.4 cm and <R=75⁰ and PQ - PR = 1.2cm

Q.7 Construct an equilateral triangle with sides 4cm.

Section -D

Q.8 Construct a triangle ABC in which and  < B = 60⁰ and <C = 45⁰ and  AB+BC+CA = 13 cm.

Q.9 Construct a right triangle whose base is 12cm and sum of its hypotenuse and other side is 18cm.

Q.10 Construct a with its perimeter = 11cm and the base angles of 75⁰ and 30⁰.

Answers:

Q.1 b Q.2 b

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