Chapter 1's Top 5 Concepts
Remembering things from all the way back into the beginning of the school year can be a real hassle. The top 5 things from chapter 1 that you are most likely to forget are listed on this page for your help!!
Definitions
- Undefined Terms - point, line and plane. These terms have no official definitions, they are basically what they are.
- Noncoplanar Points - points that do not lie on the same plane.
- Bisector - point, line, or ray that cuts a line or angle exactly in half.
The Midpoint Formula
- ( x , y ) = {( x1 + x2 / 2) , (y1 + y2 / 2)}
- The midpoint formula is used when trying to fine the middle of a line segement. The midpoint is the point that cuts a line exactly in half.
Circumference of a Circle
- C = 2 ð r ² or C = ð d (( ð = pi , d = diameter , r = radius))
- The circumference of a circle is the perimeter around the given circle.
- **d = the diameter (line segment) through the middle of the circle, r = half the diameter