Exercise 3: ABC is an isosceles triangle with vertex A. K is the orthogonal projection of A on (BC) and O is the midpoint of [AC]. N is the symmetric of K with respect to O. 1) Prove that AKCN is a rectangle. 2) Prove that ABKN is a parallelogram

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Q: 24 А(-3, 2), В(5, —4)

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Q: 7) Given: Parallelogram ABCD with diagonals AC and BD intersecting at E. Prove: AADE ACBE B.

A: Solution: To Prove △ADE≅△CBE

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