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Showing Results for properties of triangles

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

Sorting Triangles

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

Identifying Triangles: Right Triangles

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

Identifying Triangles: Acute 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

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

Everyday Triangles

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

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

Geometry Review: Angles and Polygons

Challenge your students to identify or draw 18 different geometric shapes, including polygons, quadrilaterals, and triangles.

Geometry Task Cards

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

Triangle Angles

Is your child in need of a geometry review? This worksheet covers the basic 2-D shapes, from circles and triangles to pentagons and hexagons.

2-D Shapes: Fill in the Table

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.

Categorize These Shapes!

Triangles, trapezoids, rhombi...oh my! Identifying different shapes is an important milestone for young learners. Use this colorful activity to assess your first graders’ abilities to recognize and differentiate between 2-D shapes.

2-D Shapes Check-in

Use this resource to help your students develop their understanding of trapezoids and other two-dimensional shapes. Students will compare the attributes of trapezoids to those of other plane figures, such as triangles and ovals, in this geometry activity.

Geometry: Comparing Trapezoids & Other Shapes

Space out with this shapes worksheet, where kids identify basic 2D shapes.

Shape Pictures: Space Travel

Give your students a chance to sort polygons into categories that make sense to them.

Polygon Shape Sort

Assess your students&rsquo; knowledge of geometry concepts from polygons to coordinate planes!

Mixed Geometry Review

Assess kids' understanding of geometry with this sheet.

Shape Up with Geometry

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

Tri-Angles

This shape challenge worksheet doubles as a coloring page, and builds early geometry skills.

Basic Shapes: Color and Count

Children make real-world connections to geometry concepts with this 3D shape scavenger hunt activity!

3D Shape Scavenger Hunt Activity

Does your child need a little more practice finding the area of a triangle? This worksheet will give her all the practice she needs!

Triangle Area Puzzle

In this worksheet, learners will find and draw a line of symmetry on nine shapes.

Draw a Line of Symmetry

Everyday Circles

Everyday Rectangles

Show your child that shapes are more than just lines on a page with this worksheet that challenges him to find all the shapes in the picture.

Shapes in Pictures: My Kind of Town

Practice identifying parallel and perpendicular lines in the context of 2D shapes with this fourth-grade geometry worksheet!

Parallel and Perpendicular Lines in Two-Dimensional Shapes

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