Question

WHEN A CIRCULAR PLANE ROTATED TO 30 DEGREE HOW IT WILL LOOK IN ITS FRONT VIEW( SURFACE PARALLEL TO vp) *

Answer 1

When the circular plane is at 0° rotation, from the front it will look like a line(or rectangular). But when it's rotated to 30°,it'll look like an ellipse in its front view.

If we consider the full 3D structure as a 2D model, the ellipse will have its semi-major axis(longer) horizontally placed and its semi-minor axis(shorter) vertically placed. The two vertex will be on the horizontal edges of the mirror while the co-vertex will be on the vertical edges of the mirror.

Answer 2

WHEN A CIRCULAR PLANE ROTATED TO 30 DEGREE IT WILL LOOK IN ITS FRONT VIEW( SURFACE PARALLEL TO vp) *-  

it will look same as it was and it wont change any shape or vision because the true shape of the plane is circle and it is also solid.