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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

Don’t be a square; let your students learn about the different properties of quadrilaterals through this fun exercise.


Properties of Quadrilaterals

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

Grab your fishing rod and see how well you know the properties of quadrilaterals!

Dino Fishing: Identifying Quadrilaterals

After practicing this exercise, students will be able to easily sort two dimensional figures based on their properties.


Classify Two-Dimensional Figures

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

In this lesson, students engage in interesting hands-on activities that help them discover the properties of parallel, perpendicular, and intersecting lines. Your little mathematicians will have a blast as they learn about geometry.

What's My Line?

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

Sorting takes on a new challenge for students in this activity which engages their critical thinking skills. As students determine defining attributes, they’ll figure out what makes a shape a shape!

Shape Sort

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

3D Shape Scavenger Hunt Activity

Square Tangram

Kids practice identifying simple shapes based on descriptions of their attributes.

Identifying Shapes By Attributes

Shapes all around! Kids learn basic preschool shapes with this sweet song.

Preschool Shapes Song

Kids learn simple shapes and their attributes in this sweet song.

Shapes Song

In this lesson, your students will become familiar with shapes by identifying them in real life. Your students will love identifying how many sides shapes have by drawing and counting them!

Know Your Shapes!

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