A pentagon contains 3 triangles. The sum of the interior ... exterior angle of a polygon = 360 ÷ number of sides.

The number of rectangular faces is equal to the number of sides of the polygon cross-section. A triangle has three sides. A triangular prism has three rectangular faces and two triangular faces ...

A pentagon has 5 sides so it contains 3 triangles. The sum of the interior angles is: All the interior angles in a regular polygon are equal. The formula for calculating the size of an interior ...

Polygons are 2D shapes that have straight sides. Regular polygons have sides and angles that are all the same size. Let's recap what a polygon is with this quick video. How would you work out the ...