Geometry Definitons

• Exact location
• Ordered pair of coordinates

two coplanar lines that either have no points in common or are identical

absolute value of the difference of two coordinates

set in which all segments connecting points of the set lie entirely in the set

situation where the antecedent (if part) is true but the consequent (then part) is false

converse of P -->Q is Q -->P

point on segment AB where AM = AB

set of all points in a plane a certain distance (radius) from a certain point (center)

• AUB, is the set of elements which are either in A or in B or in both A and B
• AnB, set of elements which are in both A and B

union of three or more segments in the same plane such that each segment intersects exactly two others @ their endpoints

union of two rays that have the same endpoint

• if and only if m=0^o
• " " 0<m<90^o
• " " m=90^o
• " " 90<m<180^o
• " " m=180^o

• M₁+M₂=90^o
• M₁+M₂=180^o

when an angle is split exactly in half on the interior side

Sequence of justified conclusions, leading from the antecedent to the consequent.

y₁-y₂/x₁-x₂

Two segments, rays, or lines that form a 90^o angle.