October 17, 2014
October 17, 2014
Given:
1 =
2
Prove:
1 is a right angle
Statement
1 2
Reason
October 17, 2014
(3.1) Parallel Lines and Transversals
Objective:
1. To identify the relationships between two lines or two planes.
2. To name angle pairs formed by parallel lines and transversals.
October 17, 2014
Defns:
parallel lines:
skew lines:
parallel planes:
transversal:
Obj: 1. To identify the relationships between two lines or two planes and
2. To name angle pairs formed by parallel lines and transversals.
October 17, 2014
Obj: 1. To identify the relationships between two lines or two planes and
2. To name angle pairs formed by parallel lines and transversals.
Identify each of the following:
1. segment ll to BC through pt. E.
2. segment skew to BC through pt. E.
3. a plane ll to plane ABG.
October 17, 2014
Obj: 1. To identify the relationships between two lines or two planes and
2. To name angle pairs formed by parallel lines and transversals.
interior angles:
t
exterior angles:
5
1
6
2
a
consecutive interior angles:
consecutive exterior angles:
3
7
alternate interior angles:
alternate exterior angles:
corresponding angles:
4
8
b
October 17, 2014
Obj: 1. To identify the relationships between two lines or two planes and
2. To name angle pairs formed by parallel lines and transversals.
Classify each angle pair.
October 17, 2014
Obj: 1. To identify the relationships between two lines or two planes and
2. To name angle pairs formed by parallel lines and transversals.
Guided Practice:
Turn to Page 175 in your textbook.
October 17, 2014
Obj: 1. To identify the relationships between two lines or two planes and
2. To name angle pairs formed by parallel lines and transversals.
HW:
HR: (3.1)Pg.176: 14, 19, 20, 21-47odd