The triangle is isosceles so m∠A and m∠C are the same.
So to find ∠B, we do 74 + 74 + b = 180
148 + b = 180
b = 180 - 148
b = 32
Answer B is the right choice.
B=0 because everything cancels out
All you do is add up all of the side lengths, and you got the perimeter.
You will use the polygon sun theorem.
(N-2)(180)
Plug in you're number for N
(37-2)(180)
Can you figure out how to solve the rest of the problem?
Answer:
1. 10
2. 4, and the bottom row is 21
3. divide the bottom by 4. you get 8
4. top row is 15 and bottom row is missing 6