Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Geometry chapter 1
Chapter 1 only
| Term | Definition |
|---|---|
| point | a specific location |
| line | a connected straight path |
| plane | a flat surface |
| line segment | a portion of a line consisting of two points and all points between them |
| ray | a portion of a line that starts at a point and continues forever in a direction |
| parallel | lines that lie in the same plane but do not intersect |
| coplanar | points that lie in the same plane |
| colinear | points the lie on the same line |
| postulate | a statement that is accepted true without proof |
| segment addition postulate | AB+BC=AC |
| distance formula | (x2-x1)2+(y2-y1)2 |
| midpoint | the point that divides the segment into two segments that have the same length |
| segment bisector | A line, ray, or other figure that passes through the midpoint of a segment |
| midpoint formula | (x1+x2, y1+y2) 2 2 |
| angle | a figure formed by two rays with the same endpoint |
| vertex | the common endpoint |
| degrees | A common measurement unit for circular arcs |
| acute angle | 0<m<A<90 |
| right angle | m<A=90 |
| obtuse angle | 90<m<A<180 |
| angle bisector | a ray that divides an angle into two angles that both have the same measure |
| Angle Addition Postulate | m<PQR=m<PQS+m<SQR |
| Transformation | a function that changes the position, shape, and/or size of a figure |
| Image | the output |
| Preimage | a figure that is used as the input of a transformation |
| Rigid motion | a transformation that changes the position of a figure without changing the size or shape of the figure |
| Conjecture | a statement that is believed to be true |
| Inductive reasoning | the process of reasoning that a rule or statement may be true by looking at the specific cases |
| Deductive reasoning | the process of using logic to prove whether all cases are true |
| Theorem | a statement that you can prove is true using a series of logical steps |
| Counterexample | an example that shows a conjecture to be false |
| Addition Property of Equality | a=b, then a+c=b+c |
| Subtraction Property of Equality | a=b, then a-c=b-c |
| Multiplication Property of Equality | a=b, then ac=bc |
| Division Property of Equality | a=b, then c does not equal 0, then a/c=b/c |
| Reflexive Property of Equality | a=a |
| Symmetric Property of Equality | a=b, then b=a |
| Transitive Property of Equality | a=b, then b=c, then a=c |
| Substitution Property of Equality | a=b, then b can be substituted for a in any expression |
| Linear Pair Theorem | a pair of adjacent angles whose non-common sides are opposite rays |
Created by:
user-1713623
Popular Math sets