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Triangles - 14276_72
Polygons

Illustrator Draftsman 3 & 2 - Volume 2 Standard Practices and Theory
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Definition of Terms, Continued Quadrilaterals Quadrilaterals  are  plane  figures  bound  by  four  straight  sides.  Four-sided figures with parallel opposing sides are further classified as  parallelograms. A parallelogram having four equal sides and equal angles is called a  square. A  rhombus has four equal sides and equal opposing angles. A figure with equal opposing sides and equal angles is a rectangle. A figure with equal opposing sides and equal opposing angles is a  rhomboid.  Quadrilaterals with only two parallel sides and no angles equal are trapezoids. If no sides and no angles are equal or parallel, the figure is called a trapezium. Trapezoids and trapeziums are quadrilaterals but are not parallelograms. Figure 2-5 shows the six different types of quadrilaterals. Figure  2-5.—Quadrilaterals. Continued  on  next  page 2-7







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