Question

27. In the given figure, PQR is an isosceles right triangle. Find the value of xº.
(A) 75°
(B) 125°
(C) 135°
(D) 145°
(E) None of these
​

Answer 1

Answer:

(3) 135⁰

by the rule of External property of triangle

Answer 2

Answer:

135°

Step-by-step explanation:

First.... we find side of P and R

In triangle PQR,

Q+P+R= 180°

90°+P+R= 180°

P+R=180-90

P+R=90

Then , P=45°

R=45°

We known that a straight line is 180°

R+x=180°

45°-x= 180°

x=180°-45°

x=135°