SAT Vocabulary
Cards
Angle
A figure formed by two rays that share the same endpoint
Adjacent Angles
Two angles in the same plane sharing a common vertex/side but no common interior points
Congruent Angles
Angles that have the same measure
Base
Side of an isoscoles triangle whose endpoints are the vertices of the base angles
Alternate Exterior Angles
Exterior angles on alternate sides of the transversal (Not on the same parallel line)
Alternate Interior Angles
Interior angles on alternate sides of the transversal (Not on the same parallel line)
Chord
A segment whose endpoints are on a circle
Circle
A closed plane figure with all points on the figure the same distance from the center
Concentric Circles
Circles that have the same center
Congruent Circles
Circles that have the same radius
Congruent Segments
Segments that have equal length
Corresponding Angles
Two angles in corresponding positions relative to two lines
Deductive Reasoning
Reasoning we use in geometry
Diagonal
Segments joining any 2 non consecutive vertices
CPCTC?
Corresponding parts congruent triangles are congruent.
Diameter
Any chord that passes through a center of a circle
Dodecagon
12-Sided Polygon
Equidistant
Distance that is equal
Hexagon
6-Sided Polygon
Inscribed Polygon
Each vertex of the polygon lies on the circle
Inscribed Triangle
Each vetex of the triangle lies on the circle
Measure
The amount of openness in a angle
Midpoint
A point that divides the segement into two congruent congruent segments
Opposite Rays
Rays that share a same endpoint and form a line
Parallel Lines
Coplanar lines that never intersect
Perpendicular Bisector
A line, ray, or segment that is perpendicular to the segment at its midpoint
Perpendicular Lines
2 segments, rays, or lines that form a 90 degree angle
Postulates
Assumptions accepted without proof
Ray
A part of a line, with 1 endpoint, that continues without end on one direction
Secant
A line that contains a chord
Segment (<->AB)
All points between A and B
Skew Lines
Non coplanar lines that don't intersect
Space
The set of all points
Vertex Angle
An angle formed by the equilateral sides of an isoscoles triangle
Vertical Angle
Angles that are congruent
Same-Side Interior Angles
Two interior angles on the same side of a transversal
Same-Side Exterior Angles
Two exterior angles on the same side of a transversal
