Diagonal cross section of a cylinder

2. Cross section parallel to the base of a cone

3. Shape created when a semi-circle is rotated about the y-axis

4. Diagonal cross section through the widest part of a sphere

5. Perpendicular cross section of a cone

a. triangle

b. great circle

c. ellipse

d. circle

e. sphere

The correct matches are as follows:

1. Diagonal cross section of a cylinder

c. ellipse

2. Cross section parallel to the base of a cone

d. circle

3. Shape created when a semi-circle is rotated about the y-axis

e. sphere

4. Diagonal cross section through the widest part of a sphere

b. great circle

5. Perpendicular cross section of a cone

a. triangle

Hope this answers the question. Have a nice day.