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castortr0y [4]
3 years ago
11

Help me out thanks !!!!!

Mathematics
1 answer:
kupik [55]3 years ago
5 0

Answer:

B) ∠SBY = 117°

Step-by-step explanation:

interior angles in a pentagon = (5x180) - 360 = 540°

each angle = 540/5 = 108°

interior angles in a octagon = (8x180) - 360 = 1080°

each angle = 1080/8 = 135°

∠SBY = 360 - 108 - 135 = 117°

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