1. Parallel and Perpendicular Lines
Objective Learn to recognize parallel and perpendicular lines.

2. Parallel and Perpendicular Lines…
A plane is an infinite, flat surface. Lines in a plane that never meet are called Parallel Lines.
Perpendicular Lines: are lines that intersect to form 90 degree angles.
For Example:
Transversal Line: A line that crosses at least two other parallel lines is called transversal.

3. Examples: Determine if each pair of lines is parallel, perpendicular, transversal, or neither.
1) )
answer: __________ answer:_________ 3)
Answer: ___________________

4. Homework: In 1-10, write the word that best describes the lines
Homework: In 1-10, write the word that best describes the lines. (Parallel or Perpendicular)
The strings on a guitar. _______________
Sidewalks on opposite sides of the street. ________________
The lines that make up a plus + sign. ___________________
The hands of the clock at 9pm. _____________________
Two palm trees in Los Angeles. _____________________
The window panes in the classroom. _________________
Ask an adult and name 2 parallel streets. __________________
Ask an adult and name of 2 perpendicular streets. _________________
La Mascota and Maquilishuat streets are ________________
The corner of the classroom door is _____________________