Name that parallelogram. These diagonals also cut each other exactly in half.

Show Answer. If not, classify the shape.

You have to be careful, though, because looks can be deceiving. When it "stands up" so it is symmetrical in appearance, its diagonals are horizontal and vertical it is usually called a diamond. Malcolm has a Master's Degree in education and holds four teaching certificates.

All rights reserved including the right of reproduction in whole or in part in any form. Note that because these three quadrilaterals are all parallelograms, their properties include the parallelogram properties. If we have a parallelogram where all sides are congruent then we have what is called a rhombus. You can see this for yourself if you lay down your four straight objects to make a rhombus and then draw in diagonals.

The Perimeter is 4 times "s" the side length because all sides are equal in length: Geometricians say they bisect each other. If we have a quadrilateral where one pair and only one pair of sides are parallel then we have what is called a trapezoid. A square is a special case of a rhombus, because it has four equal-length sides and goes above and beyond that to also have four right angles.

14 Properties of a Rhombus

All the properties of a parallelogram apply the ones that matter here are parallel sides, opposite angles are congruent, and consecutive angles are supplementary. How to make an ellipse.

Properties of parallelograms

Ask a question Get Help. If you guessed that it was a square, then you didn't read the heading for this section very well. Since this shape is a rhombus you can set any of its sides equal to each other. If you can draw your Rhombus, try the Area of Polygon by Drawing tool. One of the two characteristics that make a rhombus unique is that its four sides are equal in length, or congruent. The distance between each base is the same, making the shape a rhombus!

Rhombus: Properties and Shape

When Is a Parallelogram a Rectangle? If you have a quadrilateral with only one pair of parallel sides, you definitely do not have a rhombus because two of its sides cannot be the same length.

Figure 16. Geometry Right triangles and trigonometry Overview Mean and geometry The converse of the Pythagorean theorem and special triangles.