Unit 1 Angle Relationships

1
Unit 1Angle Relationships

• Vocabulary Foldable
• Directions Please cut and glue your Unit 1
  vocabulary terms on the outside of your foldable
  and the definition on the corresponding inside
  flap. We will add examples tomorrow in class. ?

2
Parallel Lines

• Lines in the same plane that NEVER cross.

3
Perpendicular Lines

• Lines that intersect to form right angles

4
Intersecting Lines

• Two lines in a plane that cross each other

5
Transversal

• A line that intersects two or more lines

6
Complementary Angles

• Two angles whose measures add up to 90 degrees

7
Supplementary Angles

• Two angles whose measures add up to 180 degrees.
• (When parallel lines are cut by a transversal,
• the obtuse angles and the acute angles will form
  supplementary angles)

8
Congruent

• Having the EXACT same size, shape, and measure

9
Alternate Interior Angles

• Created when a transversal crosses two parallel
  lines. Each pair of these angles are inside the
  parallel lines and on opposite sides of the
  transversal.

10
Alternate Exterior Angles

• Created when a transversal crosses two parallel
  lines. Each pair of these angles are outside the
  parallel lines and on opposite sides of the
  transversal.

11
Vertical Angles

• Angles that share a vertex,
• but NO common sides
• (they are across from each other)

12
Adjacent Angles

• Two angles that share a common vertex AND a
  common side
• (they are beside each other)

13
Corresponding Angles

• Angles that are on the same side of the
  transversal and have the same angle measurement

14
Same Side Interior Angles

• Angles that are on the SAME SIDE of the
  transversal and are INSIDE the parallel lines

15
Same Side Exterior Angles

• Angles that are on the SAME SIDE of the
  transversal, and are OUTSIDE the parallel lines