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### 30 Cards in this Set

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• Back
 Point the most basic building block of geometry Line a straight, continuous arrangement of infinitely many point Plane a flat surface that extends infinitely along its length and width --->NO THICKNESS Definition a statement that clarifies or explains the meaning of a word or a phrase Collinear on the same line Coplanar on the same plane Line segment two points called the endpoints of the segment and all the points between them that are collinear with the two points Endpoints the two points on a line segment that have all the points between them that are collinear Congruent segments segments that have the same measure or length Midpoint the point on the segment that is the same distance from both endpoints Bisects divides the segment into two congruent segments Ray any of a group of lines diverging from a common center Angle two rays that share a common endpoint, provided that the two rays are noncollinear Vertex The common endpoint of the two rays Sides (angle) the two rays of an angle Measure of an angle the smallest amount of rotation about the vertex from one ray to the other, measured in degrees Degrees a unit of measure for angles equal to an angle with its vertex at the center of a circle and its sides cutting off 1/360 of the circumference Protractor The geometry tool you use to measure an angle Congruent angles two angles that have the same measure Angle bisector A ray that contains the vertex and divides the angle into two congruent angles Incoming angle ormed by the cushion and the path of the ball approaching the cushion Outgoing angle formed by the cushion and the path of the ball leaving the cushion Polygon a closed figure in a plane, formed by connecting line segments endpoint to endpoint with each segment intersecting exactly two others Side (polygon) each line segment Vertex (polygon) Each endpoint where the sides meet Diagnol line segment that connects two nonconsecutive vertices Convex (polygon) no diagonal is outside the polygon Concave (polygon) at least one diagonal is outside the polygon Congruent polygons two polygons that are exactly the same in size and shape Keep up the good work!!! KEEP GOING