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2 dim. figures vocab
Two Dimensional Figures Vocabulary
Term | Definition |
---|---|
hexagon | six sided shape |
congruent | same size, same shape |
vertex | point where two lines are joined |
parallelogram | a shape with TWO sets of parallel sides |
quadrilateral | a four sided shape |
parallel lines | line segments that never intersect |
octagon | eight sided shape |
pentagon | five sided shape |
decagon | ten sided shape |
perpendicular lines | line segments that intersect at right angles |
polygon | a closed figure with 3 or more sides |
acute angle | an angle between 0 and 90 degrees |
right angle | an angle that is exactly 90 degrees |
obtuse angle | an angle that is greater than 90 degrees, but less than 180 degrees |