Which direction will you face if you start facing East and make 1 2 of a revolution clockwise?

Given, to find the direction that we face starting from East and making 1 2 revolution. From the figure, we can see that facing East and make 1 2 of a revolution clockwise that means making 180 o results West. Hence, the required answer is West.

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An angle of $130 °$ is called .(Acute angle/Obtuse angle)

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Important Questions on Lines and Angles

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Mathematics>Geometry>Lines and Angles>Special Types of Angles

If the sum of two angles is _____, then they are called supplementary

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Mathematics>Geometry>Lines and Angles>Special Types of Angles

Write down the measures of some acute angles.(Give at least two examples of each)

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Mathematics>Geometry>Lines and Angles>Special Types of Angles

Among two supplementary angles, the measure of the larger angle is

36 °

more than the measure of the smaller. Find their measures.

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Mathematics>Geometry>Lines and Angles>Special Types of Angles

Can two angles be supplementary if both of them are acute?

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Mathematics>Geometry>Lines and Angles>Special Types of Angles

In the given figure,

A O B

is a straight line and the ray $O C$ stands on it.
If

∠ A O C = (2 x - 10) °

and

∠ B O C = (3 x + 20) °

, find the value of

x

.
Also, find

∠ A O C

and

∠ B O C

EASY

Mathematics>Geometry>Lines and Angles>Special Types of Angles

In the given figure, $∠ 1$ and $∠ 2$ are supplementary angles. If $∠ 1$ is decreased, what changes should take place in $∠ 2$ so that both the angles still remain supplementary.

Question Image

EASY

Mathematics>Geometry>Lines and Angles>Special Types of Angles

In Fig, the sides

B C, C A

and

B A

of a

△ A B C

have been produced to

D, E

and

F

respectively. If

∠ A C D = 105 °

and

∠ E A F = 45 °

. Find all the angles of the

△ A B C

MEDIUM

Mathematics>Geometry>Lines and Angles>Special Types of Angles

Mark

135^{°}

on a semicircle by folding the semicircle.

HARD

Mathematics>Geometry>Lines and Angles>Special Types of Angles

What part of a revolution have you turned through if you stand facing East and turn clockwise to face North?

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Mathematics>Geometry>Lines and Angles>Special Types of Angles

An angle which is greater than

180^{o}

but less than

360^{o}

is known as

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Mathematics>Geometry>Lines and Angles>Special Types of Angles

In the given figure, $A O B$ is a straight line and the rays $O C$ and $O D$ stands on it. If $∠ A O C = 65 °, ∠ B O D = 70 °$ and $∠ C O D = x °$ , find the value of $x$ .