Practice classifying polygons by counting sides and vertices, identifying regular and irregular shapes, and using properties of triangles and quadrilaterals.
Read each problem carefully. Use the number of sides, vertices, angles, and special properties to classify each polygon. Show your work in the space provided.
Identify and sort polygons by sides, angles, and properties
Math - Grade 4-5
- 1
A shape has 3 straight sides and 3 vertices. What type of polygon is it?
- 2
Look at the shape shown. Is it a polygon? Explain why or why not.
- 3
A polygon has 5 sides. What is the name of this polygon?
- 4
Classify the polygon shown by the number of sides.
- 5
A shape has 4 sides, 4 vertices, and all angles are right angles. Its opposite sides are equal. What is the most specific name for this shape?
- 6
Look at the quadrilateral shown. Classify it as a square, rectangle, rhombus, trapezoid, or parallelogram. Choose the most specific name.
- 7
A polygon has 8 sides and 8 vertices. What is the name of this polygon?
- 8
A triangle has 3 equal sides. Classify the triangle by its sides.
- 9
Look at the triangle shown. Classify it by its angles.
- 10
A polygon is closed and has 7 straight sides. What is the name of the polygon, and how many vertices does it have?
- 11
Is the shape shown a regular polygon or an irregular polygon? Explain your answer.
- 12
A quadrilateral has two pairs of parallel sides, but its angles are not right angles. What type of quadrilateral could it be?
- 13
Classify the shape shown using the most specific name: triangle, quadrilateral, pentagon, hexagon, or octagon.
- 14
A square is also a rectangle. Explain why this statement is true.
- 15
Sort these polygons by number of sides: triangle, octagon, quadrilateral, pentagon, hexagon. Write them from fewest sides to most sides.