Basics
A location in space represented with a dot.
a point.
A figure formed by two rays with the same endpoint.
an angle.
Angle that forms 90o
Right Angle
LH bisects GK at M. GM=2x+6, and GK=24. Find x.
3
Two angles whose sum is equal to 90 degrees.
Complementary angles.
A set of connected points that extend without end in two opposite directions.
a line
Supplementary angles
Angles that add to 180 deg
K is in the interior of <LMN, <LMK=52 and <KMN=12. Find <LMN.
64
Sometimes, always, or never true. Support your answer with a sketch. If M is the midpoint of KL , then M, K, and L are collinear.
Always
Two angles whose sum is equal to 180 degrees.
Supplementary angles.
A part of a line that has one endpoint and extends without end in the opposite direction.
a ray.
An angle whose measure is less than 90 degrees.
an acute angle.
<A=64.1, Find the measure of the supplement of A
115.9
A five-sided polygon
Pentagon
Two angles that share a common ray/side and a common vertex
Adjacent angles
A part of a line that consists of two endpoints and all the points between them.
a segment.
An angle whose measure is greater than 90 degrees but less than 180 degrees.
an obtuse angle.
A six-sided polygon
Hexagon
Draw a triangle and name all the segments using the letters A, B, and C.
AB, BC, AC
Angles formed opposite one another when two lines intersect.
Vertical angles
A flat surface that extends without end in all directions.
a plane.
An angle whose measure is exactly 180 degrees.
a straight angle.
<XYZ=2x and <PQR=8x - 20. If <XYZ and <PQR are supplementary, find the measure of each angle.
40 and 140
What is the length of a segment that starts at -1.5 and ends at 6?
7.5 (opposite signs add, same signs subtract to find length)
The term used to describe 2 angles that lie on a line or line segment.
A Linear Pair