In the adjacent figure, you have a star ABCDEFGHKL. All the sides of the star are equal. What is the measure of angles at the vertices A, C, E, G and K?
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Solution
Given ABCDEFGHKL is the coordination's of a star.
As all the sides are equal.
The sum of interior angles of a 10 sides figure
=1440°
∴ The measure of ∠A=144°
⇒ Similarly ∠C=144°,∠E=144°
∠G=144° and ∠K=144°
As all the sides are equal. All the angles are equal.