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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

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.

Super Shapes: Triangle

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

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

Treehouse Triangles #2

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

Tri-Angles

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

Circle, cheese, triangle, square: One of these things does not belong in this group. Help your child figure out the outlying object with this worksheet.

What Doesn't Belong?: Shapes, Letters, and Numbers

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

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

Find the Shape: Triangles

Find all the triangles in this fun shapes coloring worksheet!

Color the Triangles

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

Fact Triangles: Subtraction Within 20

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

How Many Triangles?

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

Classifying figures by features is a fundamental geometry skill. Use this lesson plan to teach your students how to categorize triangles by internal angle types. 

Classifying Triangles by Internal Angles

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

Sorting Triangles

This "Treehouse Triangles" worksheets breaks down the geometric process into simple steps. Take angles from archenemy to acquaintance with this worksheet.

Treehouse Triangles #5

Practice geometry in a fun way with this "Treehouse Triangles" worksheet. Get your child to measure angles with ease in this treehouse-themed worksheet.

Treehouse Triangles #4

How many triangles do you see? Introduce your young student to shapes and beginning geometry concepts with this fun coloring sheet.

Find the Shapes: Triangles

This worksheet challenges your preschooler to decide which two triangles are the same shape and size.

Tricky Triangles: Beginner's Geometry

Use these vocabulary cards with the EL Support Lesson Plan: Fact Family Triangles.

Vocabulary Cards: Fact Family Triangles

Children will take note of the everyday shapes that surround them in this fun geometry activity.

Everyday Triangles

Students will love getting to make and cut out their own fact family triangles as they practice writing three related numbers.

Make Your Own Fact Family Triangles

Focus on fact fluency within 10 in this colorful addition worksheet!

Fact Triangles: Addition to 10

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