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Geometry Module 1 Topic A Vocab
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Gravity
Terms in this set (26)
Angle
The union of two non-collinear rays with the same endpoint.
Angle Addition Axiom
If B is in the interior of angle AOC, then m AOB + m=m AOC
Circle
The set of all points in the plane that are a distance r from a center point C.
Circumcenter of the triangle
the point of concurrency of the three perpendicular bisectors.
Collinear
Three or more points that are contained on the same line.
Complementary Angles
TWO angles whose measures ad up to 90 degrees.
Concurrent
when three or more lines intersect in a single point.
Equidistant
a point A is said to be equidistant from two different points B and C if AB=AC
Equilateral Triangle
a triangle with all sides of equal length.
Figure
a set of points in a plane
Geometric Construction
a set of instructions for drawing points, lines, circles, and figures in the plane.
Incenter of the triangle
the point of concurrency of the three angle bisectors of a triangle.
Length of a Segment
the distance from point A to point B on line AB
Linear Pair
two adjacent angles that form a straight line.
Midpoint
a point on a segment that divides the segment into two congruent segments.
Perpendicular
if two lines intersect at one point, and any of the angles formed by the intersection of the lines is a 90 degree(right) angle.
Perpendicular bisector
a segment that passes through the midpoint and forms right angles with the given segment.
Point of concurrency
the point of intersection when three or more lines are concurrent.
Radius
A segment from the center of a circle to a point on the circle.
Right Angle
An angle that's measure is 90degrees.
Segment
The set consisting of all the points on a line between two specified points.
Segment addition axiom.
if point B is between points A and C, then AB+BC=AC
Segment Bisector
A line, ray, line segment or plane that intersects a line segment at its midpoint.
Straight Angle
a line that measures 180 degrees.
Supplementary Angles
TWO angles whose measures add up to 180 degrees.
Zero Angles
a ray that measures 0 degrees.
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