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# Angle Pairs

## Understand complementary angles as angles whose sum is 90 degrees and supplementary angles as angles whose sum is 180 degrees.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Angle Pairs

Learn how to identify and use angle pairs.

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## Measures of Angle Pairs

Learn measure of angle pairs.

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## Angle Pairs

Identify angle pairs as supplementary, complementary or neither

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## Measures of Angle Pairs

Learn measure of angle pairs.

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• PLIX

## Angle Measurements

Angle Pairs Interactive

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• Interactive Exercise

## Supplementary Angles--Word Problem

Solve for the unknown angle. You are only given information in writing.

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• Practice
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## Angle Pairs Practice

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• Interactive Exercise

## Supplementary Angles

Given a set of adjacent, supplementary, angles find the measure of the unknown measure.

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• Interactive Exercise

## Vertical and Supplementary Angle Facts

Displays several statements about vertical and supplementary angles. Decide whether each is true or false.

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• Interactive Exercise

Displays a pair of adjacent, supplementary angles. Find the measure of the unknown angle.

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• Interactive Exercise

## Algebra and Adjacent Supplementary Angles

Two supplementary angles are displayed. Use algebra to find the value of x.

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• Interactive Exercise

## Supplementary Angles--Word Problem

Solve for the unknown angle. You are only given information in writing.

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• Interactive Exercise

## Unknown Complementary Angle Word Problem

Presents a problem involving two complementary angles. Can you solve for the unknown angle?

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• Interactive Exercise

## Unknown Complementary Angle Word Problem with Algebra

Presents a problem involving two complementary angles. Can you solve for the unknown angle?

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• Interactive Exercise

## Unknown Greater Complementary Angle Word Problem

Presents a problem involving two complementary angles. Can you solve for the unknown angle?

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• Interactive Exercise

## Linear Pair Facts

Displays several statements about linear pairs. Decide whether each is true or false.

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• Interactive Exercise

## Form a Linear Pair

Displays either a linear pair or not a linear pair. Decide whether the statement is true or false.

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• Interactive Exercise

## Vertical Angle

Displays two intersecting lines. What is the value of x?

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• Interactive Exercise

## Algebra and Vertical Angles

Displays two intersecting lines. The measures of two angles are given as algebraic expressions. Determine the value of x.

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## Identify Angle Pairs as Supplementary, Complementary, or Neither Post Read

Develop understanding of concepts by studying them in a relational manner. Analyze and refine the concept by summarizing the main idea, creating visual aids, and generating questions and comments using a Four Square Concept Matrix.

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