Question

It's a triangle PQRS whose measure of angels are P=80° S= 70° Q= x° R=2x° find the measure of angle Q & angle R

Answer 1

Step-by-step explanation:

Correct option is

D

90

∘

Complementary angles means when angles add up to 90 degree.

Since sum of a triangle is 180 degree, so if two angles angle P and angle Q are complementary then angle R will be 90 degree

∠P+∠Q+∠R= 180

0

90+∠R= 180

0

∠R= 90

0