Answer:
D
Step-by-step explanation:
Answer:
10.7
Step-by-step explanation:
Answer:
120 deg
Step-by-step explanation:
There is an angle symbol in the equilateral triangle and another symbol in half of the vertex angle. Those two angles are congruent.
The measure of the vertex angle is 2 * 60 deg = 120 deg
Answer: 120 deg
A
This is because 4x18 = 72
Hope this helps