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Formula for each interior angle in a regular polygon.
(N - 2) 180
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N
Formula for each exterior angle in a regular polygon.
360 ÷ N
Formula for the number of triangles in a polygon.
N - 2
Formula for the interior angle sum.
Formula for the sum of the exterior angles.
360
HL Theorem.
If the hypotenuse and leg of a right angle is equal to a hypotenuse and a leg of another triangle, then those triangles are congruent.
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