Finding Supplementary Angles
- Understand that supplementary angles add up to 180°.
- Find a missing angle measure when you know the other angle in a supplementary pair.
- Use subtraction from 180° to solve for an unknown angle.
7th Grade Angles Worksheets
Free angles worksheets with answer key. No login or account needed. From identifying the type of angle, to measuring and drawing angles, we've got you covered. A grading column and quick grade scale maker grading a breeze and a modified pages help with lower level learners or when just introducing a topic. Great for teachers or for homeschool.
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About these worksheets
Students develop angle measurement and classification skills through a variety of hands-on activities. Worksheets cover using protractors to measure and create angles, identifying acute, obtuse, right, and reflex angles, finding missing angles in shapes and straight lines, and working with complementary and supplementary angle pairs. Topics also include estimating angles, finding angles in circles, and solving for variables in angle equations. These resources span fourth through seventh grade standards.
Finding Complementary Angles
- Understand that complementary angles add up to 90°.
- Find a missing angle measure by subtracting from 90°.
- Check whether two angles are complementary by adding their measures.
Finding Missing Angles
- Find an unknown angle when you know the other angle in a straight line (they add to 180°).
- Use vertical angles and adjacent angles in intersecting lines to figure out missing measures.
Finding Complementary and Supplementary Angles
- Practice finding complementary angles by subtracting from 90°
- Practice finding supplementary angles by subtracting from 180°
- Learn the difference between complementary (add to 90°) and supplementary (add to 180°) angle pairs
Creating Triangles
- Use a given angle as a starting point to draw a triangle that fits the angle.
- Draw straight line segments from the angle’s vertex to make three sides that meet at three corners.
Finding Variable Value by Balancing Equations
- Find the value of a missing variable by keeping both sides of an equation balanced.
- Use addition and subtraction to undo numbers around a variable and isolate it.
- Solve for an unknown angle measure when the equation includes a variable.