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°
