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Byju's Answer

Standard VII

Mathematics

Constructing Angle Bisector

Choose the an...

Question

Choose the angles among the following options which require the construction of $60^{\circ}$ as its first step.

45^{\circ}

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30^{\circ}

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120^{\circ}

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all of the above

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Solution

The correct options are
B $30^{\circ}$
C $120^{\circ}$
Construction of $30^{\circ}$ and $120^{\circ}$ involves construction of $60^{\circ}$ as its first step.
$30^{\circ}$ angle is constructed by bisecting $60^{\circ}$ .
In the construction of $120^{\circ}$ angle, initial step is the construction of $60^{\circ}$ .

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Similar questions

For the construction of a $60^{\circ}$ angle, drawing which of the following is the starting step?

Construct a

△ P Q R

such that

∠ P = 30^{\circ}, ∠ Q = 60^{\circ}

and

P Q = 10 c m

If following are the steps of construction, then answer the following question:

Which of the following is the first step of construction?

Steps of Construction:

Step 1. At

P

, draw a ray making an angle of

30^{\circ}

Step 2. At

Q

, draw another ray making an angle of

60^{\circ}

which intersects the first ray at

R

. Thus,

△ P Q R

is the required triangle.

Step 3. Draw a line segment

P Q = 10 c m

Q. Choose the options which tell us about the requirements for construction of a rhombus.

Q. Which is the incorrect step from the following options to construct a

30^{\circ}

angle?

Q. Construct a

△ P Q R

such that

∠ P = 30^{\circ}, ∠ Q = 60^{\circ}

and

P Q = 10 c m

Type 1 if following are the steps of construction and type 0 if following are not tue steps of construction.

Steps of Construction:

(i) Draw a line segment

P Q = 10 c m

(ii) At

P

, draw a ray making an angle of

30^{\circ}

(iii) At

Q

, draw another ray making an angle of

60^{\circ}

which intersects the first ray at

R

△ P Q R

is the required triangle.

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Choose the angles among the following options which require the construction of 60∘ as its first step.

The correct options are B 30∘ C 120∘Construction of 30∘ and 120∘ involves construction of 60∘ as its first step. 30∘ angle is constructed by bisecting 60∘. In the construction of 120∘ angle, initial step is the construction of 60∘.

Choose the angles among the following options which require the construction of $60^{\circ}$ as its first step.