Introduction to 3D Solids

Q. Which of the following is not a 3-Dimensional figure?

1. Circle
2. Sphere
3. Cylinder
4. Cone

Q.

Name the shape of the matchbox.

1. Cube

2. Cylindrical

3. Cuboid

4. Cone

Q.

What is the shape of a tennis ball?

1. $Cube$

2. $Cuboid$

3. $Sphere$

4. $Cone$

Q. A sphere is not a polyhedron as it is perfectly curved, it is the generalization of a circle and the most symmetric object in space.

1. False
2. True

Q. How many hemispheres are there in a Sphere?

1. 2

Q. Which of the following is not a cylinder?

1. Cubicles
2. Cold drink cans
3. Test tube

Q. Which of the follwoing are in three dimensions?

1. Circle
2. Rectangle
3. Triangle
4. Cylinder

Q. 2-Dimensional figures can be classified as

1. Only Polygons
2. Only Non-polygons
3. Polygon/ Non polygon

Q. Among the various polyhedrons, the most fundamental polyhedra is a tetrahedron.

1. False
2. True

Q. An object which is not closed does not have closed edges, and has many insides is called a non - polygon.

1. False
2. True

Q. Which among the following is Non - Polyhedra?

1. Cone
2. Cylinder
3. Cone & Cylinder

Q. Denis tries to open the cylinder along its curved surface. What shape would be obtained by him?

1. Square
2. Circle
3. Rectangle
4. Triangle

Q. Circles of the same radius when stacked up to a certain height gives a

1. Cone
2. Pyramid
3. Cylinder

Q. A 3-d shape having circular surface on one end and a point at which all the sides drawn from circular surfcae will meet is called__

1. Cylinder
2. Cone
3. Rectangualr prism
4. Cube

Q. Which of the following is/are the property/properties of the rectangular prism?

1. It has 12 sides
2. It has 6 faces
3. It has 8 vertices
4. It is also known as cuboid

Q. A tetrahedron is a polyhedron having a generalization of a square on the plane.

1. False
2. True