2002
Mathematics
67ca00ce0c643c71d77dee1f
The sum of the interior angles of a polygon is 20 right angles. How many sides does the polygon have?
A.
12
B.
20
C.
40
D.
10
Correct Answer: 12
Explanation
The formula for the sum of the interior angles of a regular polygon = (2n - 4) x 90° Given: Sum = 20 right angles (2n - 4) x 90° = 20 times 90° ⇒ 2n - 4 = 20 2n = 24; n = 12.
The formula for the sum of the interior angles of a regular polygon = (2n - 4) x 90° Given: Sum = 20 right angles (2n - 4) x 90° = 20 times 90° ⇒ 2n - 4 = 20 2n = 24; n = 12.THIS WEEK's
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