MCQ Questions for Class 6 Maths Understanding Elementary Shapes Quiz 2

Which two triangles have

$\angle B$ as common?

0%
$\triangle ABD \ and \ \triangle ADC$
0%
$\triangle ABD \ and \ \triangle ABC$
0%
$\triangle ABC \ and \ \triangle ADC$
0%
None of these.

The shape of a gilli, in the gilli-danda game (see Fig.), is a combination of

0%
two cylinders
0%
a cone and a cylinder
0%
two cones and a cylinder
0%
two cylinders and a cone

Explanation

From Definition,
Cone: A solid (

$3$ -dimensional) object that has a circular base and one vertex
Cylinder: A solid object with:
* two identical flat ends that are circular or elliptical
* and one curved side., Answer is C

A surface has

0%
length and breadth
0%
length only
0%
breadth only
0%
length and height

The edges of a surface are:

0%
curves
0%
lines
0%
flat
0%
circles

State the name of a regular polygon of

$3$ sides.

0%
Equilateral triangle
0%
Isoceles triangle
0%
Scalene triangle
0%
None of these

Explanation

$A\quad regular\quad polygon\quad is\quad equiangular\quad and\quad equilateral.\\ \ A\quad polygon\quad having\quad 3\quad sides\quad is\quad called\quad an\quad EQUILATERAL \ \ TRIANGLE.\\ Ans-\quad EQUILATERAL \ \ TRIANGLE.$

$4:15$ , the angle formed between the two hands of a clock is:

0%
acute
0%
obtuse
0%
right angle
0%
none of these

Explanation

$4:15$ , the hour will be between

$4$ and

$5$ .

And minute hand will be on

$3$ .

Thus, the angle formed between these two hands will be less than

$90^{o}$ .

Hence, they form a acute angle.

Identify the number of polygons from the given figures?

0%
$5$
0%
$2$
0%
$6$
0%
$3$

Explanation

A polygon is one which is made of straight lines and encloses a single area that is bounded by them.

From the given figure: Figure (1) & (2) are polygons while the rest others do not appear to be polygons.

Therefore there are

$2$ polygons in the given figure.

State the name of a regular polygon of

$6$ sides.

0%
Regular hexagon
0%
Regular heptagon
0%
Regular octagon
0%
Regular nonagon

Identify a regular polygon of 4 sides from the below list

0%
Square
0%
Trapezium
0%
Rectangle
0%
Parallelogram

Explanation

A regular polygon is one that has all sides of equal length and has equal angles between each edge of the polygon.

Between a square, a trapezium, a rectangle, and a parallelogram, the polygon that has

$4$ equal sides is a square.

Hence square is the regular polygon of

$4$ sides.

In Fig, POQ is a line. The value of x is:

0%
$20^0$
0%
$25^0$
0%
$30^0$
0%
$35^0$

Explanation

Sum of the angles forming a linear pair is

$180^\circ$

Here angles measuring

$40^\circ, 4x$ and

$3x$ form a linear pair.

So,

$40^\circ+4x+3x=180^\circ$

$7x+40^\circ=180^\circ$

$x=20^\circ$

A plumbline (sahul) is the combination of

0%
a cone and a cylinder
0%
a hemisphere and a cone
0%
frustum of a cone and a cylinder
0%
sphere and cylinder

$\angle ABC$ in the following figure is a / an:

0%
acute angle
0%
obtuse angle
0%
reflex angle
0%
straight angle

Explanation

Angles larger than a straight angle but less than complete angle (i.e. between

$180^o$ and

$360^o$ ) are called reflex angles.

Here, the given

$\angle ABC$ measures greater than

$180^o$ but less than

$360^o$ .

Hence, the given angle is a reflex angle.

Therefore, option

$C$ is correct.

The number of sides of a regular polygon, if each of its interior angles is

$135^{\circ}$ , is given by:

0%
$4$
0%
$6$
0%
$8$
0%
$10$

Explanation

Angle of a regular polygon is given by:

$\cfrac{n-2}{n}\times 180=135$ where

$n$ is the number of sides of the polygon
Therefore,

$180n - 360 = 135n$

$n =8$ sides

A cube is a special type of cuboid is

0%
True
0%
False
0%
Anomalous
0%
None of these

Name the angle formed at each corner of an envelope.

0%
Acute angle
0%
Obtuse angle
0%
Right angle
0%
Straight angle

Explanation

The envelope is nothing but rectangular in shape

$\therefore$ Each corner angle of Envelope is

$90^o$ i.e. right angle.

Fill in the blanks with the correct word from the options given.

Vertical angles are .......... right angles.

0%
Always
0%
Never
0%
Sometimes
0%
Data Insufficient

Explanation

Vertical angles can be sometime right angle as shown in the figure.

So option

$C$ is correct.

The side faces of a pyramid are

0%
triangles
0%
squares
0%
polygons
0%
trapeziums

$\displaystyle \angle AOB$ is a / an _____________ angle.

0%
acute
0%
right
0%
obtuse
0%
none of these

Explanation

An obtuse angle is one which measures more than

$90^o$ but less than

$180^o$ .

The number of dimensions, a surface has

0%
$1$
0%
$2$
0%
$3$
0%
$0$

Boundary of solid are called?

0%
Surfaces
0%
Curves
0%
Lines
0%
Points

The

${\triangle }$ formed by BC =7.2 cm , AC =6 cm and

${\angle C}$ =

${120^0}$ is:

0%
An acute angle ${\triangle }$
0%
An obtuse angled ${\triangle }$
0%
A right angled ${\triangle }$
0%
None of these

Explanation

Given

$\angle C=120^{\circ}$

Here one of the angles of the triangle is greater than

$90^{\circ}$ . So the

$\triangle$ is obtuse angled triangle.

Therefore option

$B$ is correct.

Each angle of a square is of measure ___ .

0%
$\displaystyle 30^{\circ}$
0%
$\displaystyle 45^{\circ}$
0%
$\displaystyle 60^{\circ}$
0%
$\displaystyle 90^{\circ}$

Explanation

Each angle of a square is of measure

${90}^{o}$

Straight angle is ________

0%
$\displaystyle 90^{\circ}$
0%
$\displaystyle 180^{\circ}$
0%
$\displaystyle 60^{\circ}$
0%
$\displaystyle 45^{\circ}$

Explanation

A straight angle

$= {180}^{o}$

Based on the angle measures given, which triangle is not acute?

0%
$35^\circ,\, 69^\circ,\, 76^\circ$
0%
$60^\circ,\, 60^\circ,\, 60^\circ$
0%
$88^\circ,\, 46^\circ,\, 46^\circ$
0%
$90^\circ,\, 45^\circ,\, 45^\circ$

Explanation

For acute angles triangle all the three angles must be less than

${ 90 }^{ \circ }$ .

In option

$D$ one of the angle is

${ 90 }^{ \circ }$ , so it is not acute angles triangle.

Number of right angles formed in the given figure is:

0%
$5$
0%
$3$
0%
$2$
0%
$4$

Explanation

There are two right angles in the figure which are

$\angle PSR$ and

$\angle QRS$ .

$\displaystyle 91^{\circ}$ is an example of

0%
obtuse
0%
acute
0%
right
0%
Reflex

Explanation

An obtuse angle is one which is more than

$90^0$ but less than

$180^0$ .
and hence

$\displaystyle 91^{\circ}$ is an example of obtuse.

What is the angle formed between the two hands of a clock at the time

$3:00?$

0%
Right
0%
Acute
0%
Obtuse
0%
Left

Explanation

First, note that a clock is a circle made of

$360$ degrees and that each number represents an angle and the separation between them is

$360/12 = 30$ . And at

$3:00,$ the minute hand is on the

$12$ and the hour hand is on the

$3.$

The correct answer is

$3 * 30 = 90$ degrees.

$3$ o' clock the angle formed between the two hands of a clock is

$right \ angled$ .

Hence the correct answer is option

$A$ .

Number of pairs of parallel lines in a trapezium is:

0%
$1$
0%
$2$
0%
$3$
0%
$4$

Explanation

A trapezium has one pair of parallel lines as shown in the figure. So option

$A$ is correct.

$\displaystyle 179^{\circ}$ is an example of

0%
obtuse angle.
0%
acute angle.
0%
right angle.
0%
None of the above

Explanation

An obtuse angle is an angle which is more than

$90^o$ but less than

$180^o$ .
Hence

$\displaystyle 179^{\circ}$ is an example of obtuse.

Hence $Op-A$ is correct.

$\displaystyle 89^{\circ}$ is an example of :

0%
obtuse
0%
acute
0%
right
0%
None of the above

Explanation

Angles between

${0}^{o}$ and

${90}^{o}$ are acute angles. Hence,

${89}^{o}$ is an acute angle.

CBSE Questions for Class 6 Maths Understanding Elementary Shapes Quiz 2 - MCQExams.com

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Practice Class 6 Maths Quiz Questions and Answers

CBSE Questions for Class 6 Maths Understanding Elementary Shapes Quiz 2 - MCQExams.com

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Practice Class 6 Maths Quiz Questions and Answers

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