A trapezoidal shape refers to a quadrilateral with one pair of parallel sides. It has two non-parallel sides that are not equal in length.
Quadrilateral: A four-sided polygon.
Parallel Lines: Lines that never intersect and are always the same distance apart.
Isosceles Trapezoid: A trapezoid with congruent base angles and congruent non-parallel sides.
AP Art History - Unit 5 Overview: Indigenous Americas, 1000 BCE-1980 CE
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