Mathematics, 20.08.2021 01:00 howell62
ABCD is a quadrilateral with diagonals AC and BD intersecting at P, and AC is perpendicular to BD.
also AP = PC = BP =PD
Prove that:
1) AD = AB
2) AC bisects BÂD
3) BÂD = 90°
4) ABCD is a square
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