Answer:
one half is shaded therefore one is on top and two is on the bottom
5)
you got it right
2 sides are congruent
6)
2 angles are congruent (each = 45)
8)
the triangle in #8 has been cut off. (is it a right triangle? if so, then there are 2 acute angles)
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BTW, # 7 , measure of each angle = 60 (3 congruent angles)
Answer: 5?
Step-by-step explanation: It says along the tops of the for walls so I'm assuming perimeter. 12+12+10+10 divided by 9.