# Geometry Vocab

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 Author: jakobbredbenner ID: 137775 Filename: Geometry Vocab Updated: 2012-02-26 11:44:43 Tags: Geometry Folders: Description: Geometry Words Show Answers:

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1. Point
location in space
2. LINE
a series of points that extends in two opposite directions without end
3. Segment
Consists of two endpoint and all the points of the line between the endpoints.
4. Ray
consists of two endpoints and all the points of the line on one side of the endpoint.
5. plane
a flat surface with no thickness that extends in all directions on the surface
6. Intersecting lines
• lines that have exactly one point in common
7. parallel lines
lines that have no points in common
8. Skew lines
lines that are not parallel and do not intersect
9. Angle
a figure formed by two rays with a common endpoint.
10. vertex
a point of intersection of two sides of an angle of figure
11. degrees
a measurment used to measure angles
12. acute angle
measure less than 90 degrees
13. right angle
measure 90 degrees
14. obtuse angle
measure between 90 and 180 degrees
15. straight angle
measure 180 degrees
16. perpendicular lines
lines that intersect forming a right angle
17. complementary angles
• if the sum of two angles is 90 degree
• it is complementary
18. supplementary angles
any two angles that add up to 180
19. vertical angles
two intersecting lines
20. congruent angles
angles with equal measures

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