With the view as shown in the left image. In the right image, which part of the cylinder is drawn incorrectly? (See picture 1)

• The top surface of the cylinder

• The underside of the cylinder

• The left limit line of the cylinder

• The right limit line of the cylinder

In which case that the Horizon Line ( Eye Level) also is called Vanishing

Line ?

• All lines which in reality are perpendicular to Picture Plane will converge toward a vanishing point on Horizon Line (Eye Level)

• All lines which in reality are perpendicular to Ground Plane will converge toward a vanishing point on Horizon Line ( Eye Level)

• All lines which in reality are parallel to Ground Plane will converge toward a vanishing point on Horizon Line ( Eye Level)

• lines which in reality are parallel to Picture Plane will converge toward a vanishing point on Horizon Line ( Eye Level)

On the perspective of an inclined picture plane, what is the perspective of two straight lines parallel to the ground plane but not parallel to the picture plane?

• Converge at a point on eye level

• Duplicate

• There is no common point

• Cut at a point above eye level

On the perspective of an inclined picture plane, where is the vanishing point of two straight lines that parallel to both the picture plane and the ground plane?

• Converge at a point on eye level

• Duplicate

• There is no vanishing point

• Cut at a point above eye level

What's kind of the perspective in this picture? (see picture 2)

• 2-point perspective.

• 4-point Perspective.

• Perspective of countless points.

• None of them is correct

....is the intersection of the ground plane with the picture plane:

• Vanishing point

• The bottom line of the picture plane (the ground line)

• The horizon line

If the observer lies on the ground, in this case the amount of ground area leading to the horizon line seems even less than the sky space that is from the horizon line leading to the upper sky line. So what happens to the horizon line ?

• The horizon line appears at the observer's eye level.

• The horizon line does not coincide with the observer's eye level

• The horizon line is lower than the observer's eye level

• None of them is correct

In perspective projection, in some cases, the plane placed between the center of projection and the object is called:

• Vanishing point

• The horizon line

• The projection plane (view plane)

In perspective projection, what is the picture plane used for?

• On the picture plane, we draw the perspective projection of the object

• On the picture plane, we place the object to draw perspective

• The picture plane is used for the observer to stand up

The horizon line is a crossroads between:

• Eye level plane and picture plane

• Ground plane and picture plane

• Ground plane and eye level plane

• Projection plane and ground plane