Answer:
x - 4
Step-by-step explanation:
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
I hope it’s right?! You just need to do this
You are right the answer is B
