Question

The diagram shows several planes, lines, and points.

Vertical plane P intersects horizontal plane R at line f. Vertical plane T intersects horizontal plane R are line g. Line h intersects line f at point B and intersects line g at point A. Line k extends vertically through plane R. Line l extends horizontally through the bottom half of plane P. Point C is on the lower half of the left plane is on line l.

Which statement is true about line h?

Line h intersects line f at two points, A and B.
Line h is the intersection of planes R and T.
Line h intersects plane P at point C.
Line h has points on planes R, P, and T.

Answer 1

"Line h has points on planes R, P, and T."

Explanation: h meets f at B and g at A. Since f and g lie in R, h contains two distinct points of R and thus lies in plane R. B is on f (hence in P) and A is on g (hence in T), so h has points on R, P, and T.