IGCSE /Grade 9
Maths MCQ Based On Polygons interior angles
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IGCSE Grade 9 Maths Polygons interior angles
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Check the number of triangles and quadrilaterals in the shape.
The sum of the interior angles of a triangle is \\(180^{\\circ }\\).
A regular nonagon has equal sides and angles. Use the formula for finding the sum of interior angles of the nonagon.
An interior angle = \\(\\frac{(n-2)180^\\circ}{n}\\)
Use formula to find the sum of interior angles of a polygon using sides of the polygon
The sum of all the interior angles of a polygon = \\((n-2)180^\\circ\\)
Read the question carefully.
We check the number of triangles in any polygon.
The sum of all interior angles in a regular polygon = \\((n-2)180^\\circ\\)
Find the sum of interior angles of the shape.
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