Question

11. ∆ ABC is right-angled at C. If AC = 5 cm and BC = 12 cm find the length of AB.
(a) 7 cm
(b) 17cm
(c) 13 cm
(d) none of these
12. PQR is a triangle right angled at P. If PQ = 3 cm and PR = 4 cm, find QR.
(a) 7 cm
(b) 17 cm
(c) 13 cm
(d) none of these.
13. Which is the longest side in the triangle PQR right angled at P?
(a) PQ
(b) QR
(c) PR
(d) none of these.
14. Which is the longest side in the triangle ABC right angled at B?
(a) AB
(b) BC
(c) AC
(d) none of these.
15. Which is the longest side of a right triangle?
(a) perpendicular
(b) base
(c) hypotenuse
(d) none of these.
16. In a ∆ ABC, ∠A = 35° and ∠B = 65°, then the measure of ∠C is:
(a) 50°
(b) 80°
(c) 30°
(d) 60°
17. The hypotenuse of a right triangle is 17 cm long. If one of the remaining two sides is 8 cm in length, then the length of the other side is:
(a) 15 cm
(b) 12 cm
(c) 13 cm
(d) none of these.
18. How many acute angles can a right triangle have?
(a) 1
(b) 2
(c) 3
(d) 0
19. The acute angles of right triangle are in the ratio 2 : 1. Find the measure of each of these angles.
(a) 55° and 35°
(b) 60° and 30°
(c) 50° and 40°
(d) 45° and 45°
20. One of the angles of a triangle is 100* and the other two angles are equal. Find the measure of each of these equal angles.
(a) 45°
(b) 40°
(c) 41°
(d) 42°

Answer 1

Answer:

Ans 11. Length of AB is 13 cm

Answer 2

*Answer*

10) (a) equilateral

11) (c) 13 cm [ According to Pythagoras theorem ]

12) (d) none of those [ because answer = 5 cm ]

13) (b) QR [ if P = 90° ]

14) (c) AC [ if B = 90° ]

15) (c) hypotenuse

16) (b) 80° [ A + B + C = 180° , 35° + 65° + C = 180° ]

17) (a) 15 cm [ Pythagoras theorem ]

18) (b) 2

19) (b) 60° and 30°

20) (b) 40°

I hope it helps you