The Basics of Quadrilaterals Practice Questions

Review these concepts at The Basics of Quadrilaterals Study Guide.

The Basics of Quadrilaterals Practice Questions

Practice

1. Identify all the names that describe this quadrilateral.

2. Find the value of x in this parallelogram.

Solutions

1. Parallelogram; opposite sides are equal.

   Rectangle; it has four right angles.

   Rhombus; all sides are congruent.

   Square; the sides are congruent and the angles are all 90 degrees.

2. The opposite angles are equal. Because angle H is 120 degrees, angle K must also be 120 degrees. There are 360 degrees in any quadrilateral, so the other angles (G and J) must add up to 360 –120 (angle K) –120 (angle H):

   360 –120 –120 = 120

   Angles G and J are equal, so to find x, divide 120 by 2: x = 60 degrees.