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Regular vs. Irregular Quadrilaterals

What is an irregular quadrilateral?

Goal:

Goal:

There is one other way that quadrilaterals can be described. Quadrilaterals are regular, or they are considered irregular--not regular in either form or shape.

Regular quadrilaterals have the following characteristics:

  • All four sides are equal.
  • All four angles are equal.

All other quadrilaterals are considered irregular. Read and answer the question below.

Out of the different classifications of quadrilaterals discussed in this lesson, which ones are considered regular, and which ones are considered irregular? 


For each quadrilateral, decide it if is regular or irregular. Then, click the shape to see if you are right!