Visualising Solid Objects by Viewing the Cross Section

Q.

Question 17
If we rotate a right-angled triangle of height 5 cm and base 3 cm about its height a full turn, we get

a) Cone of height 5 cm, base 3 cm

b) Triangle of height 5 cm, base 3 cm

c) Cone of height 5 cm, base 6 cm

d) Triangle of height 5 cm, base 6 cm

Q.

Give two examples for a cuboid.

Q.

What cross-section do you get when you give a (a) vertical cut (b) horizontal cut to the following object?

A brick

Q.

Name the cross section when a cone is cut vertically.

1. Square

2. Triangle

3. Circle

4. Rectangle

Q.

Name the cross-section when a cylinder is cut vertically.

1. Square

2. Rectangle

3. Circle

4. Triangle

Q. Which of the following cross-sections will you get when you give a horizontal cut to a cylindrical rod ?

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

Q. Which shape is the vertical section of the below image?

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

Q.

A cube can be obtained by stacking rectangles.

1. True

2. False

Q.

Draw a picture that shows where you could cut a cylinder so that cross-section is shaped like a circle.

Q.

A cube can be obtained by stacking rectangles.

1. True

2. False

Q.

If a right angled triangle is rotated about one of its perpendicular sides, then the shape obtained will be a cylinder.

1. True

2. False

Q.

A cone cut along it's curved surface and unfolded takes the shape of a _________.

1. Segment

2. Circle

3. Sector

4. Rectangle

Q.

If we stack a lot of 2-D figures we get 3-D objects. Say true or false.

1. False

2. True

Q. An object must be viewed from angles to exactly identify its shape.

1. one
2. two
3. three

Q. The side view of cone is an isosceles triangle.

1. False
2. True

Q. Ahas the same profile when seen from the front, top or any other side.

1. cube
2. cuboid
3. pyramid

Q. The cross section of a shape depends on the plane which we use to cut.

1. False
2. True

Q. We get a cylinder when we rotate a rectangle about its side

1. False
2. True

Q. The vertical cross section of a cylinder is a

1. Circle
2. Rectangle
3. Triangle

Q. When we stack mulitple circles, we get a __________

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

Q.

Which of the following is the side view of the given figure?

1. 

2. 

3. 

4. 

Q. What cross-section do you get when you give a horizontal cut to a upright cone?

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

Q. Any two views are sufficient to draw the exact shape of a three-dimensional object.

1. True
2. False

Q. The side view of a cylinder is a and its top view is a .

1. circle
2. rectangle
3. triangle
4. pentagon