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Showing Results for of a 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

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

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?

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

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

Sorting Triangles

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

What does one semicircle, two parallelograms, three triangles and a rectangle add up to?

Play with Shapes 5

Master your addition facts with this colorful, inviting math worksheet!

Fact Triangles: Addition to 20

Trace, then color, then write, all while getting familiarized with basic shapes: circles, squares, triangles and rectangles.

Two-Dimensional Shapes

Circles and triangles and squares, oh my! Can your child find all the hidden shapes in this cute coloring page?

Find the Shapes

How can a few triangles and a rectangle make an airplane? Show your kindergarten the magic of shapes with this fun cut and paste activity.

Shape Fun #4

2D shapes are all around us! In this lesson students will explore the properties of four different shapes—triangles, circles, rectangles, and squares! They will learn that they can find these shapes anywhere in the world around us.


Finding All of the Flat Shapes

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