A figure was created using a triangle and a semicircle. Use the ruler provided to measure the dimensions of the triangle and the
2 answers:
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Answer:
20 side polygon: 180 x (20 -2)
Step-by-step explanation:
A n side polygon can be divided into n-2 triangles
each triangle has 180°
n-2 triangles have 180 x (n-2) degrees
