For this quadrilateral post test worksheet, 7th graders answer ten multiple choice questions by solving questions based on quadrilaterals and angles of quadrilaterals. This is an interactive worksheet.

In this geometry worksheet, learners identify the interior and exterior angles using the angle sum theorem. They identify and solve quadrilaterals using properties of quadrilaterals. There are 12 questions with an answer key.

Test your knowledge of the sum of angles inside a quadrilateral.

Students may use this computer applet to explore angle sums of triangle, quadrilaterals, pentagons and hexagons.

A short interactive activity which allows you to move the vertices of a quadrilateral to prove that the sum of the opposite angles is 180 degrees.