A flat surface with no thickness.
Plane
True or False: You can name a ray with points A and B, where A is the endpoint, as either Ray AB or Ray BA.
FALSE, the first letter always has to be the starting point.
The intersection two lines
What is a point.
The Midpoint Formula?
What is M=
((x1 +x2)/2 , (y1 + y2)/2 )
An angle that measures 0o< x < 90o
What is an acute <?
Name the two ways you can name a line with points C and D
line CD or line DC
What does a segment have that a line or a ray do not?
What is two endpoints.
Name 3 Collinear points.
A,B, & C
The Distance Formula
What is d =
square root* ((x2 - x1)^2 + (y2 - y1)^2
Angles that are next to each other and have a common side.
What are adjacent angles?
Points that lie on the same line are called _________?
What is collinear
Line g and line f intersect where?
At point S.
Name 3 noncollinear points.
E, A, & B or
E, B, & C, or
E, B, & D
etc.
Find the Midpoint of (-4,4) & (5,-1)
What is (0.5, 1.5)?
Angles that are adjacent and supplementary
What is a linear pair?
The intersection of two lines.
What is a point.
Where do planes GHE, HBC, & FDC intersect?
What is Point E?
Name the plane.
Plane P or
Plane ABD or
Plane BEC or
etc.
Find the distance between (-2,3) & (-7,7). (Tenths place)
What is
approx 6.4
Which symbols are used to show: a) Congruence in segments b) Congruence in angles
What are a) dashes b) arcs
Three or more points that lie in the same plane.
What is coplanar
Plane GHE intersects Plane FEC where?
Segment FE
Name a pair of opposite rays.
Ray BA and Ray BC
Find endpoint C of segment BC if B(4, -2) and the midpoint is (2,2)
What is C(0,6)?
Define perpendicular lines.
Bonus: symbol for perpendicular.
What are two lines that intersect at 90o angles.