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The interior angles of an equilateral triangle are all 60 degrees. ... Here are two methods to find the measure of the interior angles of a regular polygon: ... The sum of the measures of the interior angles of a triangle is 180 degrees.
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www.coolmath4kids.com/interior.html
www.coolmath4kids.com/interior.html
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Math explained in easy language, plus puzzles, games, quizzes, worksheets and a forum. For K-12 kids, teachers and parents. ... Interior Angles of Polygons Exterior Angles Supplementary Angles Complementary Angles Angles On a Straight Line Angles Around a Point Degrees (Angle) Geometry Index...
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www.mathsisfun.com/geometry/interior-angles.html
www.mathsisfun.com/geometry/interior-angles.html
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An Interior Angle is an angle inside a shape. ... The Interior Angles of a Triangle add up to 180° ... Interior Angles Exterior Angles Degrees (Angle) 2D Shapes Triangles Quadrilaterals Geometry Index...
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www.mathsisfun.com/geometry/interior-angles-polygons.ht...
www.mathsisfun.com/geometry/interior-angles-polygons.html
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Alternate Interior Angles ... For any pair of parallel lines 1 and 2, that are both intersected by a third line, such as line 3 in the diagram below, angle A and angle D are called alternate interior angles. Alternate interior angles have the same degree measurement.
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www.mathleague.com/help/geometry/angles.htm
www.mathleague.com/help/geometry/angles.htm
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Internal and external angle - Wikipedia, the free encyclopedia
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In geometry, an interior angle (or internal angle ) is an angle formed by two sides of a simple polygon that share an endpoint in. This angle must be an angle on the inner side of the polygon to b...
en.wikipedia.org/wiki/Internal_and_external_angle
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In the drawing below, angles 3 and 6 are alternate interior angles, as are angles 4 and 5. Alternate interior angles are congruent. Formally, alternate interior angles are two interior angles which lie on different parallel lines and on opposite sides of a transversal.
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www.mathwords.com/a/alternate_interior_angles.htm
www.mathwords.com/a/alternate_interior_angles.htm
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Interior angles of polygons ... The sum of the interior angles of a triangle is 180 degrees ... What is the sum of the interior angles of a pentagon?
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math.youngzones.org/interior_angles.html
math.youngzones.org/interior_angles.html
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Definition and properties of alternate interior angles, showing the pairs of angles associated with a transversal ... Alternate Interior Angles are created where a transversal crosses two (usually parallel) lines. Each pair of these angles are inside the parallel lines, and on opposite sides of the transversal.
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www.mathopenref.com/anglesalternateinterior.html
www.mathopenref.com/anglesalternateinterior.html
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