Question

Consider the cube ABCDEFGH (Fig.3) I and J are respectively the mid-points of the edges [FB] and [DC], while K is the center of the face ABFE. a) Prove that KIJD is a parallelogram. b) Prove that (DK) is perpendicular to (EB). c) Deduce that (J) is orthogonal to (EB).

Answer 1

Step-by-step explanation:

Step-by-step explanation:

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