1. 1.1 Getting Started
Terms to know!

2. C B Points A specific place in space. Labeled by a capital letter.

3. Lines Two points connected with a straight line
Made up of many points (must have 2 points to determine a line)
Contains arrows at both ends
Goes on into infinity
Labeled by a lower case letter or by 2 points A B AB m

4. Give all possible names for line lAB AC AD B C D l A CD BC BD

5. Line Segment
Made up of 2 points on a number line but has a beginning and an end.
Labeled by the two end points in either direction.
Symbol does not have arrows at the end. X Y
XY YX

6. A B C D E F -1 1 2 3 4
On the number line, name the line segment for the section between 1 and 3
Between 0 and -1
Between 2 and 4
Between -1 and 3 CE BA DF AE

7. Ray Has a beginning point but no end point.
Named by the beginning point then any other point.
Goes on forever in one direction. A B C
AB or AC

8. Angle Two rays with a common start point.
Vertex: name of the common point.
Sides formed by the rays.
Named by numbers or letters.
Middle letter is always the vertex.
Can be named by vertex when only one angle present. A B 1 C
<B
<ABC
<1

9. Name all of the angles below:
<ADB
<ADC
<BDC
<1
<2 A B 1 2 D C

10. ∆Triangle A triangle has 3 segments as its sides.
A triangle has 3 angles.
Written as BOX.
A triangle is the union of three segments (symbol: U ). B X O
BOX = BO U OX U XB

11. Intersection  The intersection of any two sides is the vertex. CAT
CA  AT = A C A T