SOLUTION: if four parallel lines intersect seven parallel lines. how many parallelograms are made?
it turns out as a grid with 18 boxes. (3x6). i sure there would be an equation that woul
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Question 146675: if four parallel lines intersect seven parallel lines. how many parallelograms are made?
it turns out as a grid with 18 boxes. (3x6). i sure there would be an equation that would short cut actually counting up all the parallelograms.
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
(7-1)(4-1)=18
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