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Math Vocab - Unit 3
Term | Definition |
---|---|
polygon | a simple closed figure containing three or more line segments |
regular polygon | a polygon in which all sides and angles are the same |
similar | figures with the same shape but not the same size |
congruent | having the same size and shape |
triangle | a three-sided polygon; the sum of all angles total 180 degrees |
quadrilateral | a four-sided polygon; the sum of all the angles total 360 degrees |
rectangle | a quadrilateral with the opposite sides that are congruent and 4 right angles |
rhombus | a quadrilateral and a parallelogram with 4 congruent sides, usually does not have right angles |
square | a quadrilateral with 4 equal sides and 4 right angles |
trapezoid | a quadrilateral with only one pair of parallel sides |
pentagon | a 5 sided polygon |
hexagon | a 6 sided polygon |
heptagon | a 7 sided polygon |
octagon | an 8 sided polygon |
nonagon | a 9 sided polygon |
decagon | a 10 sided polygon |