Geometry Review: Chapters: 1-1, 1-2, 1-3
Line
Made up of points and has no thickness or width.
Line segment
Part of a line with two endpoints. The length or measure can not be negative.
Noncoplanar
Points that do not lie on the same plane.
Distance Formula
d = √[( x₂ - x₁)² + (y₂ - y₁)²]
Collinear
points that lie on the same line.
midpoint formula
(x₁+x₂)/2, (y₁+y₂)/2
Space
A boundless three-dimensional set of all points. It can contain lines and planes.
Plane
A flat surface made up of points. It has no depth and extends infinitely in all directions.
Segment Addition Postulate
If B is between A and C, then AB + BC = AC
Missing Endpoint Formula
Midpoint * 2 - endpoint
Undefinied terms
Point, line, and plane are considered ________ because they are only explained using examples and descriptions.
Coplanar
Points and lines that lie on the same plane.
Noncollinear
Points that do not lie on the same line.
congruent
When segments have the same measure.
segment bisector
a segment, ray, line, or plane that intersects a segment at its midpoint.
Number Line Formula
a+b/2
Pythagorean Theorem
a²+b²=c²
Point
is a location.