Angles & Lines​

• Transversal: a line that intersects two or more lines

• Interior angles: are angles inside of parallel lines cut by a transversal

• ​Exterior angles: are angles outside of parallel lines cut by transversal

• Alternate Interior angles: are angles that lie on opposite sides of the transversal​; When lines are parallel these angles are congruent

• Alternate Exterior angles: are angles that lie on opposite sides of the transversal​; When lines are parallel these angles are congruent​

• Corresponding angles: are the angles that are formed when two parallel lines are intersected by the transversal.​

Angles whose sum are equal to 180^o

These angles create a straight line​.

Supplementary Angles

Angles whose sum are equal to 90^o

Created from intersecting perpendicular lines​.

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Complimentary Angles

Angles & Lines

Perpendicular lines create 90^o angles that are congruent

are defined as two angles whose sum is 90 degrees.

Complimentary angles

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​are made when two angles equal a sum of 180 degrees

Supplementary angles

are angles opposite each other where two lines cross.

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Vertical Angles

• are angles outside of parallel lines cut by transversal

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​Alternate Exterior Angles

are the angles that are formed when two parallel lines are intersected by the transversal

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Same angle ,same side, different lines

​Corresponding Angles

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• are angles inside of parallel lines cut by a transversal

Alternate Interior Angles

​​are the angles that are formed when two parallel lines are intersected by the transversal.

​Corresponding

angles

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