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

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.

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

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

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

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

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.

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