Children find the unknown angles for five triangles, then identify whether the triangle is right, acute, or obtuse, in this geometry worksheet.

Use this glossary with the EL Support Lesson Plan: Triangle Time.

Have a blast coloring in this mandala made up of triangles and the number 3. This is a great way to remember that a triangle has three sides.

Use these vocabulary cards with the EL Support Lesson Plan: Triangle Time.

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

Can your kindergartener recognize triangles? Give her some extra practice with this worksheet. She'll draw triangles and pick them from a box of other 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 child learn how to identify an isosceles triangle with this geometry worksheet.

On this prekindergarten math worksheet, kids draw a line along the path that shows triangles to get to the barn.

How many sides does a triangle have? Three! Sort shapes that have three sides and shapes that don't have three sides with this wacky worksheet.

A farmer needs to get to his piglets! On this prekindergarten math worksheet, kids draw a line along the path of triangles and rectangles to get to the piglets.

Is it a square? Is it a triangle? This cut and paste worksheet will help your child categorize quadrilaterals, which are four-sided shapes.

Help your child practice identifying equilateral triangles on this geometry worksheet.

What's the connection? Make lines between the dots to create triangles with this dotty worksheet.

Help your child learn to recognize scalene triangles with this worksheet.

This printable worksheet includes six different shapes: Rectangle, circle, hexagon, rectangular prism, sphere, and triangle. Can they match the shape to its name?

See if your child can find all the triangles hidden on this geometry worksheet.

On this geometry worksheet, your third-grader will look at the different triangles and label them as equilateral, isosceles, or scalene

Let's try to find triangles! On this prekindergarten math and coloring worksheet, kids find and color all the triangles!

Ask your child to find all the triangles in this worksheet on identifying shapes. He'll hone his skill of identifying shapes, a key part of basic geometry.

All of these pictures are hiding some sneaky triangles. Can your kindergartener find them all in this colorful worksheet?

Find all the triangles in this fun shapes coloring worksheet!

Here's a colorful math challenge for your kindergartener: can he count up all the triangles in the birthday party scene?

Learning simple shapes is fun with this cute printable maze that helps preschoolers practice recognizing triangles.

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.

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

Help students hone their geometry skills with this seventh-grade math worksheet all about creating triangles given specific information.

Students explore the relationships between the side lengths and angle measures of triangles in this seventh-grade geometry worksheet!