Types of Angle Pairs

• Linear Pair/Supplementary

• Complementary

• Corresponding

• Vertical

• Alternate Interior

• Same-Side Interior

Two angles that create a line.

The angles equal 180.​

Linear Pair/Supplementary

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Two angles that create a right angle.

The angles equal 90.​

​​Complementary​

​Two angles that are across from one another at an intersection point.

The angles are equal.

Vertical Angles

Two angles that are in the same place on two different lines.

The angles are equal.​

Corresponding

Two angles that are on "alternating" or opposite sides of a transversal, and inside the parallel lines.

The angles are equal.

​​Alternate Interior​

Two angles that are on the same side of a transversal, and inside the parallel lines.

The angles equal 180.

Same-side Interior

Step 1

Decide what type of angles are shown & if they are equal, = 180 or = 90​

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Angle Pair Relationships​

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Step 2

Write the name of the angle pair then write an equation to ​solve for the variable.

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Step 3

Solve the equation.

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What if there are 2 varibales?

Solve for one of the variables first (choose the one that shows up twice)

Substitute your value into each angle to check

Use the angles you found to help solve for the other variable