Question

a vertical plane intersects the three - dimensional object in the image and divides the object into equal halves. what is the shape of the cross - section? a.

Explanation:

Step1: Analyze the cutting - plane condition

A vertical plane cuts the 3 - D object into equal halves.

Step2: Visualize the cross - section

When a vertical plane cuts a symmetric 3 - D object like the one shown (which appears to be symmetric about a vertical axis), the cross - section will be a shape that reflects the symmetry. For this object, the cross - section is a rectangle.

Answer:

Rectangle (assuming the object has a cylindrical or similar symmetric structure and the vertical cut is made through its axis of symmetry)