3.G.1

In this standard, students must understand that:

• quadrilaterals have four sides and four angles (the four angles always add up to 360)
• trapezoids are quadrilaterals that have at least one pair of parallel sides
• parallelograms are quadrilaterals that have two pairs of parallel sides (opposite sides are parallel and equal)
  • rectangles, rhombuses (rhombi), and squares are all types of parallelograms
    • rectangles have four right angles
    • rhombuses/rhombi have four equal sides
    • squares have four right angles and four equal sides

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