Angles of sum property in maths
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Theorem 1:
Angle sum property of triangle states that the sum of interior angles of a triangle is 180°. Proof: ... Thus, the sum of the interior angles of a triangle is 180°.
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The sum of angles in a triangle is 180 °. This means that the sum of angles in a hexagon is equal to 4 × 180° that is 720°. Similarly, in figure b which is a pentagon, the number of triangles constituting the shape is three, so the sum of angles in a polygon shall be 3× 180 which equals 540°.
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