The total interior angle measure in each triangle = 900°
The total interior angle measure of the polygon = 900°
The number of triangles in each polygon is two less than the number of sides.
Here, given polygon has seven sides.
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Therefore number of triangles in the polygon: 7-2 = 5
Interior angle of triangle is 180 degree.
So 5 x 180 = 900
Next is the total interior angle of the polygon: (n-2) x 180
= (7-2) x180 = 5 x 180 = 900
From this we have determined that the interior angles of triangles in the polygon is equal to the total interior angle of the polygon.
Learn more about interior angles of polygon here: https://brainly.com/question/27894327
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