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

• 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 the perspective of the vertical picture plane, the perspective of a circle placed parallel to the ground plane and at the eye level is shown as:

• A circle

• An ellipse

• A horizontal line

• All three cases are wrong

In reality, the two points A and B are equal to the height of the observer's eye level, if A is located closer to the observer than B, in the perspective of the vertical picture plane, we have:

• The point perspective A is higher than the point of perspective B

• The point perspective A is lower than the point of perspective B

• The point A perspective is as high as the point of perspective B

• It depends on whether the perspective is 1 gathering point or 2 gathering points

In reality, two points A and B are equal in height and both are higher than the observer's eye-level, if the distance from A to the picture plane is smaller than the distance from B to the picture plane. (condition is that the vertical picture plane is between the observer and points A, B), in the perspective of the vertical picture plane, we have:

• The point perspective A is higher than the point of perspective B

• The point perspective A is lower than the point of perspective B

• The point A perspective is as high as the point of perspective B

• It depends on whether the perspective is 1 gathering point or 2 gathering points

In reality, two points A and B are equal in height and both are lower than the observer's eye level, if the distance from A to the picture plane is smaller than the distance from B to the picture plane. (condition is that the vertical picture plane is between the observer and points A, B), we have:

• The point perspective A is higher than the point of perspective B

• The point perspective A is lower than the point of perspective B

• The point A perspective is as high as the point of perspective B

• It depends on whether the perspective is 1 gathering point or 2 gathering points

What's kind of perspective in this picture?

• 2-point perspective

• 4-point Perspective

• The perspective of countless points

• None of them is correct

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

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

What perspective projection systems are there?

• Inclined picture plane and vertical picture plane

• Only Inclined picture plane

• The only vertical picture plane