Quadrilaterals Exercises

How many total diagonals does an undecagon have?

Hint

We're looking for the total number of diagonals in an 11-sided figure.

How many distinct triangles can a 44-sided polygon be divided into?

Hint

An n-gon can be split into n – 2 triangles.

What is the sum of the internal angles of this polygon?

Hint

How many sides does the polygon have? How many distinct triangles could we make?

What would be the measure of a single interior angle in a regular 15-gon?

Hint

Regular polygons are equilateral and equiangular. The latter is most important in this case.

Which polygons are regular?

Hint

What is required of a regular polygon?

What is the perimeter of the polygon shown?

Hint

We break the polygon down into triangles and quadrilaterals.