Chapter 1

Vocabulary

Lines = A strait path the extends forever
Planes=A flat surface the extends forever
Points= A dot that names a location and has no size
Segments= A part of a line consisting of 2 points and can have some points between them
Endpoints= A point at the end of a segment
Rays=A part of a line that starts at an endpoint and extends forever
Opposite Rays= 2 rays that share an end point

To find Collinear points you have to look for points that are on the same -------------------------------------------------------------------->

When finding a midpoint you should use the midpoint formula

M ( x1+x2, y1+y2)
           2    ,     2

When finding the distance between 2 points to use the distance formula

AB = (1-2)2 + (3-4)2 -----Square rooted

Perimeter and Area formulas

Rectangle:
P=2l+2w
A=lw

Square:
P=4S
A=S2

Triangle:
P=a+b+c
A=1/2 BH

Transformation
Reflection= when the image looks reflected (flipped)
Rotaion= When the image is turned (still the same shape but different position)
Translation= when the object is slided into a different direction