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