Chapter 9 Angles Vocab Flashcards
1
Q
Line
A
Contains 2 points, extends infinitely in both directions.
2
Q
Point
A
An exact location
3
Q
Segment
A
Part of a ,one with 2 endpoints
4
Q
Ray
A
Part of a line with 1 end point and extends infinitely.
In one direction
5
Q
Endpoint
A
Point marking the end of a line segment or ray
6
Q
Vertex
A
Point where 2 or more line segments meet.
7
Q
Angle
A
2 rays connected at a vertex.
8
Q
Parallel lines
A
Lines that do not intersect
9
Q
Perpendicular Lines
A
Lines that intersect to create rights angles
10
Q
Intersecting Lines
A
Lines that intersect
11
Q
Right Angle
A
90 degree angle
12
Q
Straight angle
A
Exactly 180 degree angle
13
Q
Acute Angle
A
Angle under 90 degrees
14
Q
Obtuse Angle
A
Angle over 90 degrees
15
Q
Complementary Angle
A
Angles whose sum is 90 degrees
16
Q
Supplementary Angles
A
Angles whose sum is 180 degrees
