Teach your students to sort triangles as acute, right, or obtuse based on their internal angle type.

Can your first graders tell the difference between a square and a cube? How about a triangle and a cone? Use this geometry assessment to gauge your students’ abilities to use attributes to sort 2-D and 3-D shapes.

Build student understanding of the defining attributes of triangles with this sorting activity. Students will cut out different shape cards and sort them into examples and non-examples of triangles.

Help your students determine if a shape is regular or irregular!

What is the name of this shape? Is it a parallelogram or square? Teach your students to classify two-dimensional shapes using a Venn diagram.

Use this handy worksheet to help your students review those tricky polygons!

Help your students identify the differences between regular and irregular polygons!

Strengthen your child's geometry skills with this printable worksheet. Use this resource with your students to classify two-dimensional shapes like parallelograms, quadrilaterals, squares, and triangles.

Fifth graders review types of angles, triangles, and polygons in this handy geometry review.

Challenge your third grader to identify acute, right, and obtuse angles with this geometry worksheet.

In this 3rd grade geometry worksheet, your child will complete each polygon using a ruler, then identify what type of polygon it is.

This worksheet will introduce your child to the three types of triangles: the equilateral triangle, the isosceles triangle and the scalene triangle.

Kids sometimes don't distinguish between a shape that's open and one that's closed. Here, kids can see the difference as they classify shapes as open or closed.