Geometry Chap 2
Terms
undefined, object
copy deck
- segment
- part of a line that has two endpoints
- Angle Addition Postulate
- If C is in the interior of angle AOD then the measure of angle AOC + the measure of angle COD = the measure of angle AOD
- Postulate 10
- If two distinct planes intersect then their intersection is a line
- right angle
- exactly 90 degrees
- angle
- two rays that have the same initial point
- acute angle
- less than 90 degrees
- collinear
- points, segments, or rays that lie on the same line
- Postulate 6
- A line contains at least two points
- Postulate 7
- Through any three noncollinear points there is exactly one plane
- straight angle
- 180 degrees
- Postulate 9
- If two distinct points lie on a plane, then the line containing them lies in the same plane
- converse
- statement formed by switching the if and then parts
- Postulate 5
- Through any two points there is exactly one line
- obtuse angle
- more than 90 degrees but less than 180 degrees
- conditional statement
- a statement that can be written in the "if-then" form
- ray
- part of a line that has one intial point and goes endlessly in one direction
- opposite rays
- if C lies between A and B then CA and CB are opposite rays
- Ruler Postulate
- The points on a line can be matched one-to-one with the set of real numbers. The distance, AB, between any two points A and B, on a line is equal to the absolute value of the difference between the coordinates of A and B.
- Postulate 8
- A plane contains at least three noncollinear points
- Segment Addition Postulate
- If B is between points A and C, and AB+BC=AC
- adjacent angles
- two angles that have a common endpoint, a common side, and no common interior points