3D Objects

Q.

An eight-sided polygon is known as

1. Heptagon

2. Pentagon

3. Octagon

4. Hexagon

Q. What is Lateral conjugation and Scalariform conjugation.

Q.

Name the polygon shown below.

1. Heptagon

2. Octagon

3. Nonagon

4. Decagon

Q. Number of points on a straight line is ________.

1. one
2. two
3. three
4. infinite

Q.

Which of the following will not form a polyhedron?

1. $3$ triangles

2. $2$ triangles and $3$ parallelogram

3. $8$ triangles

4. $1$ pentagon and $5$ triangles

Q.

Raghu needs to make a cylindrical aluminum tube. What will be the area of the aluminum sheet required to make the tube, if the length and radius of the tube should be 1 $m$ and 3.5 $cm$ respectively [Top and bottom of the tube are of another material]?

($use\pi =\frac{22}{7}$)

1. 2200 $m^2$

2. 220 $m^2$

3. 2200 $c{m}^2$

4. 220 $c{m}^2$

Q.

Ram had five matchsticks of equal length. He made a closed figure with those matchsticks, then this figure will have ____sides and ___diagonals.

1. 5, 6

2. 5, 5

3. 5, 2

4. 6, 5

Q. Question 42
The closed curve which is also a non-intersecting polygon, is:
a)

b)

c)

d)

Q. How many dimensions a sphere has?

Q. Ais a two dimensional-figure closed by straight lines.

1. cuboid
2. polygon
3. line

Q.

The number of sides of a polygon whose number of diagonals is 14 is

1. 10

2. 7

3. 4

4. 8

Q. Sort the following objects in the increasing order of their dimensions.

1. Point
2. Plane
3. Straight line
4. Box

Q. A point hasdimension(s).

1. Zero
2. One
3. Two

Q.

(i) An ice-cream cone (ii) a cricket ball (iii) a glass tumbler (iv) a brick.

Which of the above are polyhedrons?

1. iii, iv

2. i, ii, iii

3. i, ii

4. iv

Q.

In a two-dimensional plane, how many pieces of data do we need to locate a point ___?

Q.

Which of the following options correctly describes the given figure?

1. It is closed.

2. It is a regular figure.

3. It is an open figure.

4. Number of sides can be found out.