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Classify 2D Shapes

QuestionAnswer
polygon a 2D figure with at least 3 closed straight lines.
quadrilateral a 4 sided figure
parallelogram 2 pairs of parallel side, 2 pairs of opposite sides that are the same length
trapezoid at least 1 pair of parallel sides
rhombus 2 pairs of parallel sides, 4 sides that are the same length
rectangle 2 pairs of parallel sides, 2 pairs of opposite sides that are the same length, 4 right angles
square 2 pairs of parallel side, 4 sides that are congruent, 4 right angles.
parallel lines 2 lines that will never intersect if continued on
perpendicular lines 2 lines that intersect to create a right angle
right triangle a triangle that has a right angle (one angle is 90°)
isosceles triangle at least two sides that are congruent
scalene triangle no sides are congruent (have the same length)
equilateral triangle all three sides are congruent
acute angle an angle measuring less than 90 degrees
obtuse angle an angle measuring greater than 90 degrees
right angle an angle that measures exactly 90 degrees
Created by: beth.diss
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