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13 terms

STM 3 Geometry Notes #3

Notes #3
STUDY
PLAY
open figure
any figure where at least one side does not meet
closed figure
any figure where all sides meet
polygon
any closed, flat figure with straight sides
triangle
any polygon with 3 sides and 3 angles
quadrilateral
any polygon with 4 straight sides
parallelogram
any quadrilateral that has opposite sides that are equal and parallel
rhombus
a parallelogram with 4 sides of equal length
square
parallelogram with 4 right angles and all sides are of equal length
rectangle
a parallelogram with 4 right angles and whose opposite sides are of equal lengh
trapezoid
a quadrilateral with 4 straight sides and 1 set of parallel lines
pentagon
a polygon with 5 sides and 5 angles
hexagon
a polygon with 6 sides and 6 angles
octagon
a polygon with 8 sides and 8 angles