Fill in the blanks:
A. A cube has……… vertices, ………….edges and …………..faces.
B. The point at which three faces of a figure meet is known as its…………
C. A cuboid is also known as a rectangular…………..
D. A triangular pyramid is called a..………….
A. 8, 12, 6
A Cube has 8 vertices, 12 edges and 6 faces.
A, B, C, D, E, F, G, H are the 8 vertices.
AB, BC, CD, DA, EF, FG, GH, HE, AE, DH, BF, CG are the 12 edges.
ABCD, EFGH, ADHE, BCGF, ABFE and DCGH are the 6 faces
B. vertex
Vertex is the point where faces meets.
A is the vertex for AB, AD and EA.
C. Prism
A cuboid is also known as rectangular prism because a rectangular prism has six rectangular shaped sides with all sides at an angle 90° to each other.
Therefore, it can also be called a cuboid.
D. Tetrahedron
The tetrahedron is a polyhedron with a flat polygon base and the triangular faces that connect the base to a common point. Therefore, it is called a triangular pyramid.