3. It has one circular base.

B. CONE

CONE: IS A SOLID FIGURE THAT HAS A CIRCULAR BASE AND ONE VERTEX

4. It is where three or more edges meet.

D. VERTEX

VERTEX: A VERTEX IS THE POINT WHERE THREE OR MORE EDGES MEET

5. This has 6 faces, 12 edges and 8 vertices

B. CUBE

CUBE: CUBES HAVE 6 SQUARE FACES, 12 EDGES, 8 VERTICES, EDGES THAT ARE ALL THE SAME LENGTH

6. What is the shape of base triangular prism

A. TRIANGLE

7. It is a prism with square base. All its base are equal

D. PRISM

8. It is a prism with rectangular base, and it has 6 faces, 8 vertices, and 12 edges.

B. RECTANGULAR PRISM

RECTANGULAR PRISM: A RECTANGULAR PRISM HAS 6 FACES, 8 VERTICES ( OR CORNER ) AND 12 EDGES

NOT QUITE SURE OF NO. 7, BUT I HOPE IT HELPS YOU