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Can a rhombus be a trapezoid?
The answer depends on which definition of trapezoid (or trapezium, outside of North America) is used.Some mathematicians define a trapezoid as any four-sided figure with at least one pair of parallel sides. Using that definition, a rhombus is a special type of trapezoid because a rhombus is a figure with two sets of parallel sides.Others are more strict, using the name trapezoid only for four-sided figures with exactly one pair of parallel sides. By this definition a rhombus is not a trapezoid.
Make a trapezoid without using the square piece in the tangram?
no way
Does a trapezoid have 4 right angles?
Not in general, but a more-specific answer depends on which definition of trapezoid (or trapezium, outside of North America) is used.Some mathematicians define a trapezoid as any four-sided figure with at least one pair of parallel sides. Using that definition, a figure with four right angles (square or rectangle) is a special type of trapezoid because it would necessarily have two sets of parallel sides.Others are more strict, using the name trapezoid only for four-sided figures with exactly one pair of parallel sides. By this definition a figure with two sets of parallel sides is not a trapezoid.
How do you find the area of a trapezoid using the area of a triangle?
You have to cut the trapezoid into three shapes. The three shapes will be two triangles and one rectangle or square. You have to find the area of these three shapes and then add all of the three areas up to find the area of the trapezoid.
Can you make trapezoid using a 7 piece tangram?
Yes according to my calculations, it is completely possible. :)
