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Unit 1 Quiz 1

geometry definitions

QuestionAnswer
Line A geometric figure that extends in one dimension and is represented by a straight line with arrowheads on each end.
Intersection The set of all point that are created with two geometric figures meet.
Midpoint The point that divides, or bisects, a segment into two congruent segments.
Plane A geometric figure that extends in two dimensions. It is usually represented by a shape that looks like a tabletop or a wall.
Obtuse Angle Any angle whose measure is greater than 90 but less than 180.
Supplementary Angles Two angles whose sum equals 180 degrees.
Ray A type of line that consists of an initial point and all points on the line that extends in one direction.
Congruent Segments Two segments that have the same length.
Segment A type of line that consists of two endpoints and all the points on the line that lie between the two endpoints.
Colinear Points Two segments that have the same length.
Acute Angle Any angle whose measure is between 0 and 90 degrees.
Segment Bisector Any geometric figure that intersects a segment at its midpoint.
Construction A geometric drawing that uses a limited set of tools, usually a compass and a straighthead.
Vertical Angles Two angles that are created by two intersecting lines. These angles must share only a vertex and be congruent to one another.
Distance Formula square root [(delta x)^2 + (delta y)^2]
Midpoint Formula (Average of x's, Average of y's)
Complementary Angles Any two angles that add to exactly 90 degrees. Complementary angles do not need to be adjacent.
Created by: mrs.gardner