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Math: Chapter 9 "Geometry: Investigating Patterns"

Understanding and Using the Vocabulary

Tools

A	B
a line dividing a shape into two matching halves	line of symmetry
a six-sided figure	hexagon
a polygon with all sides and angles congruent	regular ploygon
a quadrilateral with opposite sides parallel	parallelogram
a simple closed figure fromed by three or more sides	polygon
a ruler or any object with a straight side	staightedge
the point where two edges of a polygon intersect	vertex
the most common unit of measure for an angle	degree
an angle whose measure is between 0 and 90 degrees	acute angle
an angle whose measure is between 90 and 180 degrees	obtuse angle