True, 4.5 × 8 = 36, Area of triangle = (base × height) ÷ 2, The height is perpendicular to the base., Area is measured in square units., 12.6 ÷ 3 = 4.2, False, A trapezoid has two pairs of parallel sides., 6.25 × 4 = 24, 2.8 × 5 = 15

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