Intersecting lines
Types of lines
Vocbulary
Angles
100
A pair of lower case Ls (ll) are what kind of lines?
Parallel lines
100
A flashlight turned on is more line a line, ray, or segment?
Ray
100
Two lines that intersect at 90* angles.
Perpendicular
100
An angle smaller than 90* is...
Example: <
Acute (aw, how cute, a little angle)
200
These lines intersect in the shape of a T
Perpendicular lines
200
<-------------------->
Line or line segment?
Line
200
A pair of railroad tracks is all you need to know!
Parallel lines
200
An angle that is bigger than 90* is called...
Example: _/
Obtuse
300
A 90* angle is parallel or perpendicular?
Perpendicular
300
Ms. Immel puts a dot on a piece of paper.
Did she draw a line, line segment, or point?
Point
300
A line with two points on each side is actually called a...
line segment
300
What angle does this make?
L
Right angle
400
True or false: this is a perpendicular intersection.
=
False
400
These lines are all labeled correctly. True or false?
True
400
What term is missing from this list?
-Point
-Ray
-Line
-_______?
Line segment
400
A pair of parallel lines make what angle?
Trick question! Parallel lines never intersect or make an angle.
500
True or false: this shape will intersect in a perpendicular angle.
/\
False
500
Mikey eats a magic bean and starts stretching upwards forever!
Is Mikey a segment or ray?
Ray
500
When two lines cross, no matter what angle it makes, this is called an...
Intersection
500
A straight, flat line has a special name for the angle. It's obtuse, but what more specific name can it get?
Straight or 180* angle