Points/Collinear
True or False: A point has no size or dimension.
True
whats a midpoint?
a point that divides a segment into two segments
go to the board and label segment AB
endpoints (capital letters)
Rays go on forever in this many directions:
1
A plane is a ____________ surface that goes forever in every direction.
FLAT
This is how you name a point.
With a capital letter.
Lines are named by:
Two points (capital letters). Come up and write line BR with the correct "hat" symbol.
True or false: segments can be measured.
True! They have a beginning and an end.
what are perpendicular lines?
two figures/line that intersect at 90 degree angles
true or false: a plane has two dimensions
true (a plane has length and width)
A point is drawn as a ________________.
Dot.
A line goes on forever in _______ directions.
2
what are parallel lines
lines that are the same distance apart but never touch
an opposite ray starts from a _____ point and goes off in opposite directions
common
draw a plane and label it U
students will draw a square and write a capital U in it.
This is the amount of points on a line.
An infinite amount.
what is coplanar?
points on the same plane
True or False : Segments are part of a line.
True
what is a segment bisector?
a line, point, a ray that intersects a segment at its midpoint
what are supplementary angles
angles that measure up to 180 degrees
what is collinear?
points on the same line
What is an angle bisector?
a ray that splits an angle in to two.
true or false: Segments have one endpoint
false: segments have two endpoints.
Come to the board and draw ray VT.
show an endpoint on one end and an arrow head in the direction the endpoint is going.
what are complementary angles?
angles that measure to be 90 degrees