1
Q
Collinear
A
lying on the same line
2
Q
Obtuse Angle
A
an angle measuring between 90° and 180°
3
Q
Theorem
A
A statement that is accepted because it has been proven
4
Q
Origin
A
(0,0)
5
Q
Straight Angle
A
an angle measuring exactly 180°
6
Q
Coplanar
A
lying on the same plane
7
Q
Reflex Angle
A
an angle measuring between 180° and 360
8
Q
Supplementary Angles
A
two angles that sum to 180°
9
Q
Acute Angle
A
an angle measuring between 0° and 90°
10
Q
Plane
A
an infinite “surface” with no thickness that extends infinitely in all directions
11
Q
Spatial Reasoning
A
The ability to think about how things appear in real life, often by use of a drawing.
12
Q
Complimentary Angles
A
two angles that sum to 90°
