Download Identify each of the following. A.

3-1 Lines and Angles
Warm Up 10/11/16
Identify each of the following.
1.
points that lie in the same plane
coplanar points
2. two angles whose sum is 180°
supplementary angles
3. the intersection of two distinct intersecting lines
point
4. a pair of adjacent angles whose non-common
sides are opposite rays
linear pair
Holt McDougal Geometry
3-1 Lines and Angles
Objectives
Identify parallel, perpendicular, and
skew lines.
Identify the angles formed by two lines
and a transversal.
Holt McDougal Geometry
3-1 Lines and Angles
School Gallery Walk Expectations (Repeat
after me)
1. WE will walk quietly throughout the halls.
2. WE will walk in a line throughout the halls.
3. WE will take 6 photos of examples of
parallel lines and 6 photos of examples of
perpendicular lines.
4. WE will be respectful of other classes and
their learning.
Holt McDougal Geometry
3-1 Lines and Angles
See, Think, Make
What kind of parallel/perpendicular
lines did you SEE around the school?
What do you THINK makes these
lines parallel/perpendicular?
What conjecture/guess can you
make about what
parallel/perpendicular lines are?
Holt McDougal Geometry
3-1 Lines and Angles
What you need…….
PHONES AWAY
New Warm-Up Sheet
Pencil
Notebook
Holt McDougal Geometry
3-1 Lines and Angles
Warm-Up- 10/17
-What do you think you know
about Parallel, Perpendicular and
Skew Lines?
-What do you want to know about
Parallel, Perpendicular and Skew
Lines?
Holt McDougal Geometry
3-1 Lines and Angles
Our Goal today (WRITE THIS DOWN
IN NOTEBOOK)
-I can identify parallel,
perpendicular and skew
lines.
Holt McDougal Geometry
3-1 Lines and Angles
Vocabulary
parallel lines
perpendicular lines
skew lines
parallel planes
transversal
corresponding angles
alternate interior angles
alternate exterior angles
same-side interior angles
Holt McDougal Geometry
3-1 Lines and Angles
Two coplanar
Planes
Non-coplanar
Holt McDougal Geometry
intersect
intersect
intersect
3-1 Lines and Angles
Example 1: Identifying Types of Lines and Planes
Identify each of the following.
A. a pair of parallel segments
LM ||QR
B. a pair of skew segments
KN and PQ
C. a pair of perpendicular segments
NS  SP
D. a pair of parallel planes
plane NMR || plane KLQ
Holt McDougal Geometry
3-1 Lines and Angles
Holt McDougal Geometry
3-1 Lines and Angles
Check It Out! Example 1
Identify each of the following.
a. a pair of parallel segments
BF || EJ
b. a pair of skew segments
BF and DE are skew.
c. a pair of perpendicular segments
BF  FJ
d. a pair of parallel planes
plane FJH || plane BCD
Holt McDougal Geometry
3-1 Lines and Angles
If you have a smartphone, go to
the App Store and search
Socrative Student
Download the app
Enter the following Room Code:
XTI6LUVUG
Holt McDougal Geometry
3-1 Lines and Angles
Holt McDougal Geometry