Q. 495.0( 2 Votes )

# State whether the statements are true (T) or false (F).

A polyhedron can have 10 faces, 20 edges and 15 vertices.

Answer :

F+V=E+2 formula tells us that 10+15 is not equal to 20+2, so it is not possible for a polyhedron to have 10 faces, 20 edges and 15 vertices.

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A polyhedron has 20 faces and 12 vertices. Find the edges of the polyhedron.

NCERT - Mathematics ExemplarHow many faces are there in a

A. cube

B. pentagonal prism

C. tetrahedron

D. pentagonal pyramid?

RS Aggarwal - MathematicsHow many vertices are there in a

A. cuboid

B. tetrahedron

C. pentagonal prism

D. square pyramid?

RS Aggarwal - MathematicsUsing Euler’s formula find the unknown:

Write down the number of vertices of each of the following figures:

A. Cuboid

B. Square pyramid

C. Tetrahedron

D. Triangular prism

RS Aggarwal - MathematicsWrite down the number of edges of each of the following figures:

A. Tetrahedron

B. Rectangular pyramid

C. Cube

D. Triangular prism

RS Aggarwal - MathematicsHow many edges are there in a

A. cuboid

B. tetrahedron

C. triangular prism

D. square pyramid?

RS Aggarwal - MathematicsFill in the blanks to make the statements true:

A pyramid on an *n* sided polygon has ………… faces.