Answer:
C) 130°
Explanation:
The diameter of a circle is a straight line segment that passes through the center of the circle and has its endpoints on the circumference.
From inspection of the given circle, it appears that straight line segment HK is a diameter of the circle.
As a central angle measure equals its corresponding arc measure, and angles on a straight line sum to 180°, we can calculate the measure of ∠JMH by subtracting the measure of ∠KMJ from 180°:
⇒ ∠JMH + ∠KMJ = 180°
⇒ ∠JMH = 180° - ∠KMJ
⇒ ∠JMH = 180° - 50°
⇒ ∠JMH = 130°
Therefore, the measure of ∠JMH is 130°.