3-1 Lines and Angles Objective: To identify relationships between figures in space To identify angles formed by two lines and a transversal

New Vocabulary 1) Cut out ten vocab blocks. 2) Fill in the blocks for the following vocabulary based on examples/non-examples

Straight Angles Examples Non-Examples

Linear Pair Examples 130° 50° Non-Examples

Supplementary Angles Straight Angle Examples Non-Examples

Complementary Angles Straight Angle Examples Non-Examples

Vertical Angles Examples Non-Examples

Corresponding Angles Examples Non-Examples >

Warm Up 1) Sketch the diagram below. 2) Name a pair of the following angles: Linear Vertical Supplementary Corresponding 1 & 2, 5 & 6,… 2 & 8, 2 & 7, 3 & 5, 6 & 4 1 & 3, 5 & 7, 2 & 4…

Alternate Interior Angles Examples Non-Examples

Alternate Exterior Angles Examples Non-Examples

Same-side Interior Angles Examples Non-Examples

Same-side Exterior Angles Examples p.143: 4-7, 21-23, 25-28 (Draw first!), then spruce-up definitions Non-Examples

Scew Lines 1, 2, 7, and 8 lie outside of l and m.

Terms Transversal Corresponding angles: Alternate interior angles: A line intersecting two or more other lines in the plane Corresponding angles: Alternate interior angles: Alternate exterior angles: Parallel lines are coplanar lines that do not intersect. The symbol Means “is parallel to.” 1 2 l 3 4 5 6 k 7 8

p. 143: 1, 3-9, 11-13, 15-23