Geometry Flashcards
(32 cards)
A specific location in space.
a point
Extends to infinity in two opposite directions. A straight path that connects two points.
Line
A finite piece of a line. Does not extend infinitely in both directions.
line segment
The points at the ends of a line segment
endpoints
A line segment is named using its…
endpoints
A partial type of line with one endpoint and an arrow which stretches to infinity
Ray
Formed when two rays have a common endpoint
Angle
The common endpoint of an angle
vertex
What are four ways to name this angle?
- ∠1
- ∠B
- ∠ABE
- ∠EBA
What does the letter f represent in the diagram?
line AB
What are 3 other names for ∠4 and which should not be chosen in this scenario?
∠E, ∠CEB, or ∠BEC. ∠E should not be chosen because E is the vertex of all the other angles as well.
Name the following figure
A Point
Name the following figure
A Ray
Name the following figure
A Line
Name the following figure
An Angle
Name the following figure
A Line Segment
The distance between two points on a line segment is called…
the length of the segment
The locations of four points on a number line are A = 2, B = 4, C = − 3, and D = − 6. What is the value of AB + CD?
AB = |4 − 2| = 2 and CD = | − 3 − (−6)| = 3.
So AB+ CD= 2+ 3= 5.
Find AB, if AC = 12 and BC = 7.
AB = 12 − 7 = 5.
Points S, T, U, V, and W lie, in order from left to right, on a number line. Point U is at −2. Where are the rest of the points located?
ST = 2 TU = 1 UV = 3 VW= 2
We know point U is at −2 and TU = 1. This lets us locate point T at −3. Now we can use ST = 2 to find that S= − 5, and UV = 3 to find that V = 1. Now we can locate point W by using VW = 2, so W = 3.
AB could be used to represent the segment itself, but also…
the length of the segment.
A pair of adjacent, supplementary angles
Linear Pair
A straight line is how many degrees?
180
A linear pair of angles measures up to how many degrees?
180
