Answer:
the size of interior decagon is 70
A 1/2
Step-by-step explanation:
Ratio of short length to hypotenuse
= cos60
= 1/2
2 and remains the same
0.7 repeating I believe
i'm not sure how i got it, but yea
#5: d=22, #6: , #7:
#5:
#6:
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