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Showing Results for of triangle

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

Triangle Angles

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

Glossary: Triangle Time

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

Vocabulary Cards: Triangle Time

Do you believe in the Bermuda Triangle? Compare witness accounts of these weird waters and draw your own conclusions in this reading worksheet.

The Bermuda Triangle

Don't get trapped in the Bermuda Triangle! You'll need to make some swift twists and turns to escape these notorious waters. Are you up for the challenge?

Bermuda Triangle Mystery

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

Three Types of Triangles 

Students will work hard to build shapes with straws in this hands-on lesson about the defining attributes of triangles. Use alone or with **Know Your Shapes.**

Triangle Time

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.

Triangle Sort

Let your fourth grader play triangle detective: can she spot the acute triangles on this worksheet?

Identifying Triangles: Acute Triangles

Help your child learn how to identify an isosceles triangle with this geometry worksheet.

Isosceles Triangles

These "Treehouse Triangle" worksheets break down the geometric process into easy, solvable steps.

Treehouse Triangles #2

This cruise ship could sure use your help figuring out which direction to go. Have your student color all the triangles and squares to find the island.

Triangle and Square Maze

Your child will add up the dice to build a fact family number sentence. Then, she will use her math skills to complete the fact family triangle.

Fact Family Triangles with Dice

Find the missing angle in a triangle using addition and subtraction.

Tri-Angles

This is a great game to help your child learn number concepts in multiplication and division.

Play Triangle Flash!: A Math Game

Make words from jumbled up letters. As long as the letters are somehow connected in this triangle pattern.

Word Pyramid

Your child will use his knowledge of inverse operations to build another fact family number sentence and even complete a fact triangle.

Fact Family Dice

Your child can transform a triangle of felt into a colorful and motivating pennant sharing all her favorite characteristics and traits.

Craft a ME Pennant

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

Equilateral Triangles

This colorful worksheet asks your fourth grade geometry detective to practice identifying right triangles.

Identifying Triangles: Right Triangles

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

Match That Shape

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

Scalene Triangles

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

Count the Triangles

How much does your fourth grader know about triangles? Can he figure out the missing angle in each of these triangles?

The Missing Angle: Triangles

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

Identifying Triangles

Is your fourth grader reluctant to practice geometry? This colorful worksheet, which explores obtuse triangles, may be just what he needs!

Obtuse Triangles: Identifying Triangles

Find the facts within the number triangles in this engaging subtraction worksheet!

Fact Triangles: Subtraction Within 20

Keep students’ learning on point with this effective and efficient study of the properties of triangles.


Properties of 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.

Sorting Shapes

Build subtraction sentences with fact family triangles in this engaging worksheet!

Fact Triangles: Subtraction Within 10

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