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Geometry Unit 2Vocabulary
A starting point and all points on a line continuing in one direction only
Ray
Three or more points on the same line
Collinear
Angles that are next to each other They share a common vertex and have a
common side
Adjacent Angles
Used to calculate the distance between 2 points on a grid
Distance Formula
Cuts a segment into 2 congruent parts Can be a point, a line or a ray
Segment Bisector
Ray that divides an angle into 2 congruent angles
Angle Bisector
If, then statement
Conditional Statement
Switching the “if” and “then” parts of a conditional statement
Conditional : If you’re at Olive Garden, then you’re family
Converse : If you’re family, then you’re at Olive Garden
Converse
A statement showing why an “if – then” statement isn’t always true
If it’s Nike, then Just Do It.
Counterexample
If and only if statement Conditional : If it’s fresh, then it’s Subway Biconditional : It’s fresh if and only if it’s
Subway
Biconditional
Angles formed when 2 lines intersect across from each other
Vertical Angles
Two adjacent angles that form a straight line
Linear Pair
Two angles whose measures add up to 90 degrees
Complementary
Two angles whose measures add up to 180 degrees and form a straight line
Supplementary