This eighth-grade geometry worksheet introduces students to the Triangle Angle Sum Theorem and has them practice finding a missing interior angle in a triangle.

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

Students use the Triangle Angle-Sum Theorem to solve for the variable in triangles where two or more angle measures are linear algebraic expressions.

Find the measures of missing interior and exterior angles of triangles with this geometry worksheet!

Get more practice finding the measures of missing interior and exterior angles of triangles with this geometry worksheet!

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

Introduce your child to different angles starting with an obtuse angle and see him find the obtuse angles in this worksheet.

How well do you know your angles? Let's find out! Use this geometry resource to help your students identify and differentiate between important angles such as acute, obtuse, straight, and right angles.

Help your fourth graders take their understanding of angles and lines to the next level with this creative geometry challenge! Students will have fun drawing various types of shapes based on written descriptions and your students' knowledge of angles.

Use this glossary with the EL Support Lesson: Describing Angles.

Help Simon the Spider create 90 degree angles with this playful Halloween geometry worksheet!

In this excerpt from an upcoming math workbook, your junior detective will make a positive ID on obtuse, acute and right angles.

Put that protractor to good use! In this geometry worksheet your student will practice measuring each of these angles using a protractor.

Use these vocabulary cards with the EL Support Lesson: Describing Angles.

Test your understanding of angles with this essential geometry worksheet!

Supplement your knowledge of angles with this helpful seventh-grade worksheet!

Measure your skills with angles in this seventh-grade geometry worksheet!

Students use the Exterior Angle Theorem to solve for the variable in triangles where two or more angle measures are linear algebraic expressions.

Model how to find a missing exterior angle with this eighth-grade geometry worksheet!

Deepen students' understanding of complementary, supplementary, vertical, and adjacent angles with this seventh-grade geometry worksheet!

Students get to practice measuring angles using built-in protractors in this fun geometry activity! After measuring, they'll put their angle knowledge to the test by classifying each angle as acute, obtuse, right, or straight.

Students practice using the converse of the Pythagorean theorem to identify right triangles with this geometry worksheet!

Help your third-grader learn about right angle geometry with this simple geometry worksheet.

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

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

Once students understand angle basics, challenge them to find missing angles in this exercise!

Brush up on complementary, supplementary, vertical, and adjacent angles with this helpful worksheet for seventh graders!

Help students hone their knowledge of different angles with this eighth-grade geometry worksheet about parallel lines cut by a transversal.

Students practice using the Pythagorean theorem to find missing hypotenuse lengths on right triangles in this eighth-grade geometry worksheet!

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.