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Geometry

Opposite Ray Two rays that point in opposite directions
Congruent Angles No measurements
Line Stretches in 2 directions forever
Obtuse Angle Larger than 90° less than 180°
Ray A portion of a line with only one endpoint
Congruent segment Same size and shape
Angle bisector Divide an angle into 2 congruent angles
Acute Angle Less than 90°
Supplementary Angle 2 angles whose sum is 180°
Postulate A basic fact assumed to be true as a basic for reasoning
Adjacent Angle 2 Angle in the same place that have a common vertex and side
Perpendicular Bisector A line ray or segment that bisects another segment at a right angle
Linear pair Adjacent Angle formed by 2 intersecting lines
Angle Addition If b is the interior of <AOC. Then M<BOC = M<AOC
Plane A flat surface
Segment Addition If A,B and C are collinear and B is between A and C then AB+BC =AC
Equal Same value
AAS 2 angles congruent and a side not between them is congruent
ASA 2 Angle congruent and the side between them are congruent
Perpendicular lines 2 lines that intersect to form right angles
SAS Show 2 sides are congruent and the angles between them is congruent
Coplanar 3 non- collinear points on the same plane
Segment A portion of a line that has 2 end points
Point A location in space
Segment bisector Passes through the midpoint
Collinear Points that lie along the same line
Right angle 90°
Midpoint Divides a segment into 2 congruent segment points
Complementary angle 2 angles where sum is 90 degrees
SSS Show all 3 sides are congruent
Straight Angle An angle that measures 180°
Vertical angle Non adjacent Angle formed by 2 inter securing lines
Theorem A non intuitive truth proven by a chain of reasoning
HL Hypotenuses are congruent and one leg is congruent and a right angle
Geometry Study of shapes
Created by: Byrski-Jenna
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