Parallel Lines and Transversals

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Presentation transcript:

Parallel Lines and Transversals Day 6

Parallel Lines Lines are parallel if they are always the same distance apart and will never meet.

What is a transversal ? What is a transversal ? Answer: a line, like the red one below, that intersects two parallel lines. 

What is so special about a transversal? Answer: When a transversal cuts (or intersects) parallel lines several pairs of congruentand supplementary angles are formed.

Angles formed by a transversal

Exterior vs. Interior

What angles are formed?

In this example, these are corresponding angles: a and e b and f c and g d and h

Answer on separate sheet of paper Identify each pair of angles. 1. 1 and 3 2. 3 and 6 3. 4 and 5 4. 6 and 7 corr. s alt. int. s alt. ext. s same-side int s

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