Angle Properties

Angle Properties Vocabulary

• Congruent Angles

• Alternate Interior- alternate sides of transversal and inside the parallel lines.

• Alternate Exterior- alternate sides of transversal and outside the parallel lines.

• Vertical- opposite angles "vertices touch"

• Corresponding- one inside, one outside and on same side of transversal.

• Supplementary Angles

• Same Side Interior- same sides of transversal and inside the parallel lines.

• Same Side Exterior- same sides of transversal and outside the parallel lines.

• Linear- two angles adjacent on a straight line.

Angle Relationships help find missing values

• Two angles that are congruent are the same size. Do you know the measurement or should you set up an equation?

• Angles should be equal to each other in equation

• Two angles that are supplementary add up to 180 degrees. If you have an angle measurement, then subtract from 180. If not, set up an equation.

• One angle plus another angle equals 180 degrees.