Complementary Angles Teacher Resources

Find Complementary Angles lesson plans and worksheets
Showing 1 - 24 of 173 resources
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Math Antics Geometry Video Lessons

For Teachers 4th - 8th Standards
The point of this collection of 12 videos is to introduce learners to three basic parts of geometry—points, lines, and planes. The presenter provides definitions, shows how to classify shapes, provides examples, and shows how to use...
EngageNY

EngageNY Grade 7 Math Module 6: Geometry

For Teachers 6th Standards
Twenty-seven lessons make up a math module designed for seventh graders to focus on the concept of geometry. Topics include angles, triangles, parallelograms, three-dimensional figures, and measurement using volume and area. Two...
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Utah Middle School Math Project: 7th Grade

For Teachers 7th Standards
The eight resources in this collection provide tweens with the tools and protocols for solving problems which in turn enable them to make the transition from acquiring basic knowledge to creatively applying it. The lessons in the...
9 Items in Collection
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Grade 7, Claim 1: Concepts and Procedures Item Slide Shows

For Teachers 7th Standards
Prepare seventh graders for end-of-year assessments with a collection of nine resources packed with teacher and student-friendly slides featuring problems that address the A-I competencies. Questions are modeled after Smarter Balanced...
EngageNY

EngageNY Geometry Module 2: Similarity, Proof, and Trigonometry

For Teachers 9th - 12th Standards
The Geometry Module 2: Similarity, Proof, and Trigonometry collection includes 36 lessons that are divided into five topics: Scale Drawings, Dilations, Similarity and Dilations, Applying Similarity to Right Triangles, and Trigonometry....
3:20
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What are Complementary Angles?

For Teachers 6th - 10th
Supplementary, obtuse, acute, complementary angles. It's good to know what all of these mean, but let's focus on one at a time. Complementary angles always add up to 90 degrees. So if given one angle in a complementary angle problem, the...
3:02
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Complementary Angles: Lesson

For Students 6th - 10th Standards
Complement the angle definition. The resource, a video within a basic geometry playlist, introduces the definition of complementary angles. Using the definition, the presentation finds complements of given angles.
3:21
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How Do You Use Complementary Angles to Find a Missing Angle?

For Teachers 6th - 10th
Are complementary angles nice to each other? That's not what complementary means in math. Complementary angles are two angles that add up to 90 degrees and form a right triangle. So if given one value in a problem about complementary...
1 In 1 Collection
EngageNY

Sine and Cosine of Complementary Angles and Special Angles

For Students 9th - 10th Standards
Building trigonometric basics here will last a mathematical lifetime. Learners expand on the previous lesson in a 36-part series by examining relationships between the sine and cosine of complementary angles. They also review the ratios...
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Complementary Angles

For Students 4th - 6th
Elementary schoolers find the missing angle in a complementary angle.  This two-page worksheet contains six problems. Answers are provided.
3:19
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Write Expressions and Determine the Measure of Complementary Angles (Example)

For Students 7th - 10th Standards
Investigate algebraic applications of complementary angles. Young scholars watch as the instructor describes and defines complementary angles. He then shows an example of finding an unknown value of x given expressions for a pair of...
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Complementary Angles: Corner Kick

For Students 7th - 10th Standards
Soccer is all about angles. Young mathematicians use an interactive to correctly position the path of a soccer ball so that it reaches the goal. They consider complementary angles when answering a set of challenge questions.
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Supplementary and Complementary Angle Pairs

For Students 7th - 10th Standards
Complement and supplement your knowledge of angles. Young mathematicians study supplementary and complementary angle pairs using an interactive. A set of challenge questions solidifies this understanding.
3:42
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Find Angle Measurements Using Complementary and Supplementary Angles

For Students 6th - 8th Standards
How can geometry learners remember the difference between supplementary and complementary angles? Not only will the video explain how to remember these two angles, but it also demonstrates how to find unknown angles knowing the degree of...
Lesson Planet

"I Saw the Sine"

For Teachers 9th - 12th Standards
Discover trigonometric ratios that complement each other. Using two videos, the lesson introduces the trigonometric ratios. The class discovers the relationship between the sine and cosine of complementary angles.
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Complementary Angles (B)

For Students 7th - 9th
For this complementary angles worksheet, students use their geometry skills to identify the missing angle measurements in each set of 6 complementary angles.
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Complementary Angles (A)

For Students 5th - 6th
In this angles worksheet, students solve 6 problems in which the missing angle measurement in each set of complementary angles is calculated.
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Angle Pairs - Practice 14.2

For Students 4th - 5th
In this angle pairs activity, students use the diagram to find a pair of complementary angles, supplementary angles, exterior angles, and interior angles. Students then find the degree measurement for the angles b, c, e, h, j, and k....
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Complementary Angles

For Students 6th - 8th
In this complementary angles worksheet, students match each given angle with its complement. There are 8 problems on the page.
2:00
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Write Expressions for Complementary Angles and Supplementary Angles (Basic) (Example)

For Students 7th - 10th Standards
A straightforward lesson explains the meaning of complementary and supplementary angles. The instructor uses both an algebraic representation and a numeric example to describe each angle pair.
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Patterns in the 30-60-90 Table

For Students 9th - 12th Standards
Sine and cosine ratios have more in common than just their names—they are complementary to each other. Using a 30-60-90 triangle, pupils create a table of the sine and cosine of the acute angles. The learners describe the relationships...
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Right Triangle Relationships

For Students 9th - 12th Standards
Work with sine and cosine relationships three ways. Three questions assess pupils' understanding of the trigonometric relationship between complementary angles. Learners use the value of one ratio to determine the other and the equal...
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Sine and Cosine of Complementary Angles Lesson Seed

For Teachers 9th - 11th Standards
This resource suggests various activities to establish the relationship between the sine and cosine of complementary angles. The activities have learners making conjectures based on their explorations and providing rationales to support...
Lesson Planet

Complementary Angles

For Students 7th - 10th Standards
Here's an interactive that complements your lesson plans. Users of the resource adjust one of the angles in a complementary set to see how it affects the other. A set of challenge questions assesses understanding.