Question

Given the base of pyramid P-ABCD is a square, PA⊥ Base ABCD , ∠PDA=45° . E , F are the midpoints of edge AB and PD, respectively. Prove

(1) AF∥ Plane PCE

(2) Plane PCE⊥ Plane PCD

Steven Zheng Steven Zheng posted 2 months ago


Answer

Steven Zheng Steven Zheng posted 2 months ago

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