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# Linear Pairs

## Two adjacent angles that form a straight line.

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.

## Linear Pairs

This concept will introduce students to linear pairs of angles.

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## Identify Adjacent and Vertical Angles

Learn to identify adjacent and vertical angles.

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• PLIX

## Linear Pairs

Linear Pairs Interactive

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• PLIX

## Linear Pairs: Angles and Lines in a Perspective Drawing

Linear Pairs Interactive

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• Video

## Linear Pairs Principles

This video gives more detail about the mathematical principles presented in Linear Pairs.

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• Video

## Linear Pairs Examples

This video shows how to work step-by-step through one or more of the examples in Linear Pairs.

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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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## Linear Pairs Quiz

Linear Pairs quiz.

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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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• Critical Thinking

## Linear Pairs Discussion Questions

A list of student-submitted discussion questions for Linear Pairs.

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To activate prior knowledge, make personal connections, reflect on key concepts, encourage critical thinking, and assess student knowledge on the topic prior to reading using a Quickwrite.

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To reinforce and increase concept comprehension, and to analyze similarities and differences between topics using a Two Column Table.

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## Identify Adjacent and Vertical Angles

Learn new vocabulary words and help remember them by coming up with your own sentences with the new words using a Stop and Jot table.

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To encourage students’ critical thinking about vocabulary concepts, to allow students to reflect on their knowledge of individual vocabulary words, and to increase vocabulary comprehension using the Vocabulary Self-Rate.

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• Real World Application

## Linear Pairs

How are linear pairs used in chemistry?

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• Study Guide