Answer:
A.90°
Step-by-step explanation:
A triangle's interior angles are equal to 180°.
So since two angles are given all you need to do is add the given angles and subtract the sum from 180°.
61°+29°=90°
180°-90°=90°
The missing angle m<R is equal to 90°
Your answer is: A.90°
Hope this helps! :)
