An umbrella is in the shape of a regular octagon as shown. The umbrella is separated into sections, as shown by the dashed lines
2 answers:
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Answer:
G
Step-by-step explanation:
We can find a missing length of a triangle using a Pythagorean theorem if and only the triangle is a right angled triangle.
The side of the missing length is:
a^+b^=c^
2^+4^=c^
4+16=c^
20=c^