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3D geometry (Posted on 2021-01-22) Difficulty: 4 of 5
PABCDE is a pyramid with ABCDE a convex pentagon. A plane meets the edges PA, PB, PC, PD, PE in points A', B', C', D', E' distinct from A, B, C, D, E and P. For each of the quadrilaterals ABB'A', BCC'B, CDD'C', DEE'D', EAA'E' take the intersection of the diagonals. Show that the five intersections are coplanar.

No Solution Yet Submitted by Danish Ahmed Khan    
Rating: 1.0000 (1 votes)

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  Subject Author Date
re(2): usps postage scaleGregoryStellar2022-08-08 04:55:10
re: usps postage scalepipahaha2022-04-12 22:21:34
usps postage scaleDesirae England2022-03-17 00:41:26
re: No SubjectLacy Adams2022-03-11 04:35:57
No SubjectBennsan2021-12-01 10:36:44
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