A geometry problem by Rahil Sehgal
Geometry
Level
pending
Let π΄π΅πΆπ· be a convex quadrilateral with perpendicular diagonals.
If π΄π΅ = 20, π΅πΆ = 70 and πΆπ· = 90, then what is the value of π·π΄?
The answer is 60.
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