1.

A 10-sided polygon has four equal angles and measure of each of the other angles is 40°Find the measure of equal angles.​

Answer»

ANSWER:

TOTAL ANGLE sum in a 10 sided polygon = 10×90=900

by angle sum property,

4a+6×40=900

4a=900-240=660

a=660÷4=165

therefore measure of each EQUAL angle is 165



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