Why the diagonal gives exactly half
A rectangle is cut by one diagonal into two triangles. A student says the two triangles must have equal area, so each is exactly half the rectangle. Which statement correctly explains why that’s true?
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Not quite.Try again, or ask for a hint.
Think about what you can say about the two triangles as shapes, not just as areas, and check whether that same reason would still hold if the triangle weren't a right triangle.
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