Finding the Size of an Angle in a Polygon

The video tutorial explains how to calculate the size of angle X in a geometric diagram featuring a regular pentagon, a regular octagon, and an isosceles triangle. It covers the method to calculate interior angles of polygons using a specific formula, marking these angles on a diagram, and then using this information to find angle X. The tutorial also reviews the solution and discusses the allocation of marks for each step.

Explain the significance of the formula N - 2 multiplied by 180 in polygon angle calculations.

What is the formula to calculate the interior angles of a polygon?

How many degrees are there in the interior angles of a regular Pentagon?

What is the measure of one interior angle of a regular Octagon?

How do you calculate the angle B in the isosceles triangle BCF?

What steps are involved in calculating the angles in an isosceles triangle?

What is the value of angle X in the isosceles triangle BCF?