Question

Please help me with this ITS TIMED

Answer 1

Answer:

39?

Step-by-step explanation:

180-102=78

78/2=39

To determine to measure the unknown angle, be sure to use the total sum of 180°. If two angles are given, add them together and then subtract from 180°. If two angles are the same and unknown, subtract the known angle from 180° and then divide by 2.

Hope this helps you understand angles in a triangle