Question

11. Prove that diagonals of a square divide it into two congruent triangles.
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Answer 1

Answer:

the point where the diagonals intersect (cross), divides each diagonal into two equal parts. Each diagonal divides the square into two congruent isosceles right triangles. Because the triangles are congruent, they have the same area, and each triangle has half the area of the square....

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