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!

Get to know your complementary angles with this helpful practice sheet! Remember, complementary angles add up to make 90 degrees.

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

Master your knowledge of supplementary angles with this geometry practice sheet! Remember that supplementary angles add up to make 180 degrees.

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.

In this third grade geometry worksheet, your child will practice identifying right, acute, and obtuse 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.

Looking for a worksheet to help practice basic geometry? This printable works with identifying different types of angles.

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

On this worksheet, your third-grader will be asked to circle all the right angles they can find in the picture.

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!

Get an grip on geometry with this helpful worksheet! Your student will learn the difference between complementary and supplementary angles.

Kids get to know shapes better by counting their line segments, endpoints, and angles, and record the info in this handy chart.

Knowing how to identify right angles is a huge part of geometry. Help your child get to know his right angle shapes with this 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!