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Geometric Terms

Point A location in space.
Line A geometric figure mabe up of infinitely many points.
Ray A part of a line that starts at a point, the end point, and continues in one directiopn.
Midpoint The point that divides a line segment into two congruent parts.
Bisector A that intersects a line segement at its midpoint.
Perpendicular Two lines segments, rays, or planes that intersect to form right angles.
Transformation A change made to the size or position of a figure.
Translation Transformation that slides each point of a figure thesame distance in thesame direction.
Reflection A transformation that flips a figure over a line.
Rotation A transformation in which every point moves along a circular path around a fixed point called the center of rotation.
trapezium quadrilateral with one pair of parallel lines (British)
quadrilateral plane shape with four straight lines
parallelogram trapezium (quadrilateral) with opposite sides parallel
rectangle quadrilateral with opposite sides equal & parallel; adjacent sides perpendicular
rhombus equal sizes; opposite sides parallel (quadrilateral)
deltoid quad. with 2 pair of adjacent, equal sides
square rectangle with 4 equal sides
rhombi plural of rhombus
trapezoid American term for trapezium
Created by: abamidele