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Program: POLYGON
POLYGON
- Finds the sum of the interior angles of a convex polygon, given the number of sides.
- If the polygon is regular, it finds the measure of each interior and each exterior angle.
Useful for:
- SAT
- ACT
- Geometry
- Trigonometry
- Precalculus
Example
Q:
a. Find the sum of the interior angles of a convex decagon.
b. Find the measure of an interior angle and an exterior angle of a regular decagon.
Solution: Run POLYGON. How?
Enter 10 for the
number of sides
because a decagon
has 10 sides.
The program reports:
Press ENTER for more
information.
The program reports:
Interpretation:
a. The sum of the interior angles is 1440.
b. The interior angle is 144. The exterior angle is 36. (Note that this info is ONLY if it is a regular polygon.)
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