Grade 5 Math: Regular and Irregular Polygons

This worksheet helps fifth-grade students understand and identify regular and irregular polygons based on their side lengths and angle measures.

Grade 5 Math GeometryRegular and Irregular Polygons

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Includes

Multiple ChoiceTrue / FalseFill in the BlanksShort AnswerMatching

Standards

CCSS.MATH.CONTENT.5.G.B.3CCSS.MATH.CONTENT.5.G.B.4

Topics

MathGeometryPolygonsGrade 5

7 sections · Free to use · Printable

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Grade 5 Math: Regular and Irregular Polygons

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Read each question carefully and follow the instructions. Remember that regular polygons have all sides equal and all angles equal. Irregular polygons do not have all sides equal OR all angles equal.

1. Which of the following describes a regular polygon?

All sides are different lengths.

All angles are different measures.

All sides are equal AND all angles are equal.

It has curved sides.

2. Which shape is an example of an irregular polygon?

A square

A rectangle that is not a square

An equilateral triangle

A regular pentagon

3. All squares are regular polygons.

True

False

4. A polygon with 5 equal sides and 5 equal angles is an irregular pentagon.

True

False

5. A polygon is considered if all its sides are equal in length and all its angles are equal in measure.

6. A triangle with sides measuring 3 cm, 4 cm, and 5 cm is an example of an polygon.

7. Look at the shape below. Is it a regular or irregular polygon? Explain your answer.

8. Draw a regular quadrilateral and label its side lengths.

Match each description with the correct polygon type.

9. A polygon with 6 equal sides and 6 equal angles.

a. Irregular Pentagon

10. A polygon with 4 sides where opposite sides are equal, but not all angles are equal.

b. Regular Hexagon

11. A polygon with 5 sides of different lengths.

c. Irregular Quadrilateral