Polyhedrons

Q. A polyhedron has 7 faces and 10 vertices. How many edges does the polyhedron have?

1. 15
2. 17
3. 10
4. 2

Q. Question 1 (i)
Can a polyhedron have three triangles on its faces?

Q. What is a regular polyhedron? A cube is a regular polyhedron but cuboid is not a regular polyhedron. Why? [4 MARKS]

Q.

What is the strictly triangular matrix?

Q.

A prism is a polyhedron whose base is a polygon (of any number of sides) and lateral faces are triangles with a common vertex.

1. True

2. False

Q.

If a polyhedron has 6 vertices and 9 edges, then it has ___ faces.

1. 5

2. 4

3. 6

4. 7

Q.

Which of the following is a regular polyhedron?

1. Square Pyramid

2. Cube

3. Cuboid

4. Square Prism

Q. If the faces of the polyhedrons are made up of regular polygons and the same number of faces meet at each vertex, then they are called __________.

1. concave polyhedron
2. convex polyhedron
3. regular polyhedron
4. non regular polyhedron

Q.

Number of faces in a triangular prism is:

1. 5

2. 7

3. 6

4. 4

Q. A polygon has 27 diagonals. How many sides does it have??

Q.

What is the number of faces in a hexagonal pyramid?

1. 7

2. 8

3. 9

4. 6

Q.

What is the least number of planes that can / enclose a solid? What is the name of the solid.

Q.

A polyhedron with 4 faces and 6 edges, has ___ vertices.

1. 4

2. 5

3. 6

4. 0

Q.

What is the number of faces in a hexagonal prism?

1. 6

2. 10

3. 8

4. 9

Q.

What is triangular prism and his face vertex edges

Q.

Consider the cube:

Let the number of faces be F, number of edges be E and number of vertices be V.

Then find the value of F + E + V.

___

Q. The perpendicular distance between the ends of a prism is called the ___ of the prism.

1. height
2. square
3. base
4. line

Q.

Choose the word which is different from the rest

1. Globe

2. Football

3. Sphere

4. Rhombic cube

Q.

What does translation do to an object?

1. Changes its shape

2. Slides it

3. Magnifies it

4. Shrinks it

Q. Are sphere, cone and cylinder polyhedrons? Give reason for your answer [4 MARKS]

Q.

A polyhedron can have 25 faces, 27 edges and 50 vertices.

1. No

2. Yes

Q.

A regular polyhedron should have congruent faces and its vertices should be formed by same number of faces.

1. True

2. False

Q.

We have $4$ congruent equilateral triangles. What do we need more to make a pyramid?

1. An equilateral triangle.

2. A square with same side length as of triangle.

3. $2$ equilateral triangles with side length same as triangle.

4. $2$ squares with side length same as triangle.

Q. In which polyhedron has 6 faces, 8 vertices and 12 edges?

1. Cube
2. Triangular prism
3. Sphere
4. Cone

Q. Given here are some figures:
Classify each of them on the basis of the following
(a) Simple curve

Q. Euler's formula deals with shapes called .

1. polyhedra
2. circles
3. non - polyhedra

Q.

How many triangles are there in below figure?

1. 8

2. 6

3. 12

4. 4

Q.

Name the figure, which is obtained after completing the reflection?

1. Nonagon

2. Hexagon

3. Pentagon

4. Octagon

Q.

Above shown figure is called tetrahedron.

1. True

2. False

Q.

You all were tired after playing and the school got over. Your sister, Emma and you were walking home when she spotted an ice cream truck and that she wanted to have one. She asked for a cornetto. While having the ice cream she got a doubt about its shape. You recollected of whatever you learnt in your Math and Art class and told he the shape as _______.

1. Cuboid

2. Sphere

3. Cylinder

4. Cone