Which of the three-dimensional figures do not have a polygonal base?
Choices:
A. Figure 1
B. Figure 2
C. Figure 3
D. Figure 1 & Figure 2
Correct answer: D
Solution:
Step 1: Polygon is a closed figure formed by joining at least 3 line segments.
Step 2: Figure 1 is a cylinder with circular base.
Step 3: Figure 2 is a cone with circular base.
Step 4: Figure 3 is a triangular pyramid with triangular base.
Step 5: Circle is not a polygon.
Step 6: So, Figure 1 and Figure 2 do not have polygonal base.
