Since there are 5 triangles, the sum of the angles inside the shape is \(5 \times 180 = 900^{\circ}\) b) The shape is a regular heptagon, so all the angles must be equal. The shape has 5 sides and ...

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 ...