Question

NEED HELP ASAP
if m∠M=25 and m∠L=25, find m∠JKM

A. 18
B. 117
C. 50
D. 162

Answer 1

angle JKM = 50°

sum of angles in a triangle = 180°

angle LKM = 180° - ( 25 + 25 )° = 130°

angle JKM = 180° - 130° → (straight angle ) = 50°

Answer 2

Answer: C.   m∠JKM =50°

 

Step-by-step explanation:

We know that the an exterior angle of a triangle is equal to the sum of the opposite interior angles

Given: m∠M=25° and m∠L=25°

Since m∠JKM  is an exterior angle of triangle KLM.

Therefore, we have

m∠JKM=m∠M+m∠L

⇒m∠JKM=25°+25°

⇒m∠JKM=50°

Hence, the measure of exterior angle m∠JKM=50°