Consider a regular tetrahedron ABCD of edge a. Iis the midpoint of [BC] and [AH] is a height intriangle ADI.a) Prove that (AH) is perpendicular to the plane(ВCD).b) Calculate the angle between the two planes(АВС) and (BCD).c) Calculate the angle between (AD) and theplane (BCD).uhe 4BCDEFGH.

Answered: 11 Consider a regular tetrahedron ABCD…

Elementary Geometry For College Students, 7e

7th Edition

ISBN:9781337614085

Author:Alexander, Daniel C.; Koeberlein, Geralyn M.

Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.

ChapterP: Preliminary Concepts

SectionP.CT: Test

Problem 1CT

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