1. Lines and Angles Geometry Farris 2015

2.  I can identify parallel, perpendicular and skew lines.  I can identify the angles formed by two lines and a transversal.

3. Definitions  Parallel lines – coplanar and do not intersect (ll)  Perpendicular lines – intersect at 90° angles ( )  Skew lines – not coplanar, parallel, and do not intersect  Parallel planes – planes that do not intersect

5. Parallel Planes

6. Definitions  Transversal – a line that intersects two coplanar lines at two different points.

7.  Corresponding angles – lie on the same side of the transversal  Alternate interior angles – nonadjacent angles that lie on opposite sides of the transversal  Alternate exterior angles – lie on opposite sides of the transversal  Same-side interior angles – (constructive interior angles) lie on the same side of the transversal

9. A video to end with  https://www.youtube.com/watch?v=Dz3oqW R4ke0 https://www.youtube.com/watch?v=Dz3oqW R4ke0