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

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

Use these vocabulary cards with the EL Support Lesson: Geometry Vocabulary: Lines.

Use this glossary with the EL Support Lesson: Geometry Vocabulary: Lines.

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

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

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

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

Turn your fourth grader into a geometry detective! How many degrees is each missing angle in these quadrilaterals?

How much does your fourth grader know about triangles? Can he figure out the missing angle in each of these triangles?

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

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

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

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

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

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

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

Use this year-end assessment to check students’ grasp of key fourth grade geometry concepts.

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

Help students learn how to use a protractor.

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

Students practice identifying prime numbers, regular polygons, and irregular polygons!

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.

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.