Answer:
The answer is 12 because the other half is 8 and the other half is 12 so 12 + 8 is 22 So therefore its D
Step-by-step explanation:
Answer:
D). 12.
Step-by-step explanation:
Because the 2 angles at the vertex are equal we have the equation:
x / 21 = 8/(22-8)
x/ 21 = 8/14
x /21 = 4/7
7x = 21*4
x = 84/7
x = 12.
