# Math Vocab Ch 1.txt

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1. Acute Angle
Less than 90 degrees and greater than 0 degrees.
2. Angle
A figure formed by two rays with a common endpoint.
3. Angle Bisector
A ray that divides an angle into two congruent angles
4. Between
A point B that is between points A and C when they are all on the same line and AB+BC = AC
5. Bisect
To divide into two equal parts
6. Collinear
Points that lie on the same line
7. Coplanar
Points that lie on the same plane
8. Coordinate
The position of a point on a line
9. Distance
The absolute value of the difference between the coordinates
10. Endpoint
A point at one end of a segment / the starting point of a ray
11. Length
The distance between A and B
12. Midpoint
The point that divides a line into two equal segments
13. Obtuse Angle
Greater than 90 degrees and less than 180 degrees
14. Postulate
A statement accepted as true without proof; ex: Hayley is the awesomest person in the world, p;eriod.
15. Ray
Starts at an endpoint and extends in one direction
16. Opposite Rays
Two rays with a common endpoint that form a line.
17. Right angle
A 90-degree angle.
18. Segment
The part of a line consisting of two points and all points inbetween
19. Segment Bisector
Any ray, segment, or line that intersects a segment at its midpoint
20. Straight Angle
A 180-degree angle
21. Vertex
The common endpoint of two sides

### Card Set Information

 Author: platypie8 ID: 31955 Filename: Math Vocab Ch 1.txt Updated: 2010-08-31 01:12:37 Tags: Geometry Folders: Description: Geometry Chapter one vocab Show Answers:

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