Alternate interior angles are congruent angles that lie on two different parallel lines that have been intersected or crossed by a third line.
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If you are looking at a triangle shape, the angles within the inside of the triangle are known as the interior angles. In a triangle, there would be three interior angles.
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Alternate Interior Angles are when you have 2 angles on the inside of two lines and it's intersected by a transversal, but on opposite sides of said transversal. Say that fast 10 times.
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The interior angles of an octagon add up to 1080 degrees. The interior angles of an octagon add up to 1080 degrees.
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The sum of the interior angles of a polygon is (n-2) x 180 degrees.
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Same Side Interior angles are the angle pairs that are on the insides of the two lines (the interior) and on the same side of the transversal
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co- interior angles are on a straight line and add up to 180 degrees
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