Each interior angle in a quadrilateral (apart from the smallest) is twice the previous one. What is the size of the smallest interior angle?

Answer 1

This means that 15x=360 and the angles are 24, 48, 96, 192.

What?

The sum of the interior angles of a polygon is (n-2)*180; for a quadrilateral this means the sum of the angles is 360. This is a theorem from plane geometry. Remember?

If the angles are 1x, 2x, 4x, and 8x, you get the equation I presented first.