Understanding Elementary Shapes Test

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Understanding Elementary Shapes Test - 25

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Weekly Quiz Competition

Question 1
1 / -0

If you place a ladder against a wall at an angle, what type of a triangle will you get?

A
Equilateral triangle

B
Right angle triangle

C
Isosceles triangle

D
Scalene triangle

Solution

Here $$AO$$ is wall and $$AB$$ is ladder.

Hence,irrespective of what $$\theta$$ is, $$\angle AOB$$ will always be $${ 90 }^{ \circ }$$.

$$\therefore$$ Triangle will always be right-angled.
Question 2
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Which of the following are angles of Obtuse angled triangle?

A
$$30^{o},90^{o},60^{o}$$

B
$$30^{o},70^{o},80^{o}$$

C
$$120^{o},20^{o},40^{o}$$

D
$$90^{o},45^{o},45^{o}$$

Solution

Ans- From given angles obtuse angled triangle pair is
$$120^{\circ},20^{\circ},40^{\circ}$$
obtuse angle:- Angle greater than $$90^{\circ}$$ but smaller than $$180^{\circ}$$
Question 3
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An angle whose measure is less than that of a right angle is ______.

A
Acute

B
Obtuse

C
Right

D
Straight

Solution

$$Acute \ angle$$ has measure less than $$right \ angle$$
Hence correct answer is $$A) \ Acute$$
Question 4
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An angle whose measure is the sum of the measures of two right angles is _______.

A
Acute

B
Obtuse

C
Right

D
Straight

Solution

Step 1: Straight angle
We know that the measure of a right angle is $$90^ \circ$$ and the measure of a straight angle is $$180^ \circ.$$
Therefore, sum of the measure of two right angles is $$(90+90)^ \circ=180^ \circ.$$
Thus an angle whose measure is the sum of two right angles is $$\text{Straight}.$$
Question 5
1 / -0

An angle whose measure is greater than that of a right angle is ______.

A
Acute

B
Obtuse

C
Right

D
Straight

Solution

$$Obtuse \ angle$$ has measure more than that of $$right \ angle \ but \ less \ than \ 180\ degree$$
Hence correct answer is $$B) \ Obtuse$$
Question 6
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Choose the correct option.
$$20^{\circ}$$ is

A
Acute angle

B
Obtuse angle

C
Reflex angle

D
None of these

Solution
Question 7
1 / -0

Choose the correct option.
$$60^{\circ}$$ is

A
Acute angle

B
Obtuse angle

C
Reflex angle

D
none of these

Solution
Question 8
1 / -0

Plane figure with four sides is known as a

A
pentagon

B
triangle

C
quadrilateral

D
none of these

Solution

A plane figure having four sides is known as a quadrilateral.
The name has been derived from Latin words 'quadri', meaning $$4$$ and 'latus', meaning 'sides'.
Hence, C is the correct answer..
Question 9
1 / -0

Choose the correct option:-
$$200^{\circ}$$ is ________.

A
Acute $$\angle$$

B
Obtuse $$\angle$$

C
Reflex $$\angle$$

D
none of these

Solution

The given measure of angle is $$200^o.$$
We know, reflex angles are angles measuring greater than $$180^o$$ and less than $$360^o.$$
$$\therefore$$ $$200^o$$ is a reflex angle.
Hence, option $$C$$ is correct.
Question 10
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If the sum of two angles is greater than $$ 180^{\circ} $$, then which of the following is not possible

A
two obtuse angles

B
two right angles

C
one obtuse and one acute angle

D
one reflex and one acute angle

Solution

$$(B)$$ Two right angles, as the sum will be $$180^\circ$$ only.

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Re-Attempt Weekly Quiz Competition

Understanding Elementary Shapes Test - 25

Result

Understanding Elementary Shapes Test - 25

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SHARING IS CARING

Question 1

Equilateral triangle

Right angle triangle

Isosceles triangle

Scalene triangle

Solution

Question 2

$$30^{o},90^{o},60^{o}$$

$$30^{o},70^{o},80^{o}$$

$$120^{o},20^{o},40^{o}$$

$$90^{o},45^{o},45^{o}$$

Solution

Question 3

Acute

Obtuse

Right

Straight

Solution

Question 4

Acute

Obtuse

Right

Straight

Solution

Question 5

Acute

Obtuse

Right

Straight

Solution

Question 6

Acute angle

Obtuse angle

Reflex angle

None of these

Solution

Question 7

Acute angle

Obtuse angle

Reflex angle

none of these

Solution

Question 8

pentagon

triangle

quadrilateral

none of these

Solution

Question 9

Acute $$\angle$$

Obtuse $$\angle$$

Reflex $$\angle$$

none of these

Solution

Question 10

two obtuse angles

two right angles

one obtuse and one acute angle

one reflex and one acute angle

Solution

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