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10 questions from this quiz
A=12×b×hA = \frac{1}{2} \times b \times hA=21×b×h
A=b×hA = b \times hA=b×h
A=12(a+b)×hA = \frac{1}{2}(a + b) \times hA=21(a+b)×h
Vertical height
Triangle is half of a parallelogram
Slide slanted part to form a rectangle
Average of the two parallel sides
Identify what measurements you know
Break into simple shapes & add areas
When area is known & you need dimensions
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