Question

ΔPQR is isosceles with ∠Q = 90°. What is the measure of ∠R?​

Answer 1

In Triangle PQR, if Q = 90* then R = 90* as well.

Answer 2

Answer:

Angle R =45°

Step-by-step explanation:

triangle PQR is isosceles triangle

The sum of all angle of a triangle is 180.

so, Angle Q+ angle R+ angle P=180°

90°+2x=180°

2x=180-90

x=90/2

x=45°

It also has common trick

the sum of all angle is 180°

then angle Q =90°

so,we need 90 degree to make 180°

therefore it is isosceles triangle two angles of a triangle is equal

therefore one out of two angle carry 45°

This trick is use in multiple choice questions

Hope it helps you