What fraction of a straight angle is a right angle?

\frac{1}{2}

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\frac{1}{3}

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\frac{1}{4}

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\frac{3}{4}

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Solution

The correct option is A $\frac{1}{2}$
A straight angle measures $180^{\circ}$ and a right angle measures $90^{\circ} .$

$∴ \frac{Measure of a right angle}{Measure of a straight angle} = \frac{90^{\circ}}{180^{\circ}} = \frac{1}{2}$

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Similar questions

Q. What fraction of a straight line is a right angle?

Q. Simplify:

\frac{{(3 \frac{2}{3})}^{2} - {(2 \frac{1}{2})}^{2}}{{(4 \frac{3}{4})}^{2} - {(3 \frac{1}{3})}^{2}} \div \frac{3 \frac{2}{3} - 2 \frac{1}{2}}{4 \frac{3}{4} - 3 \frac{1}{3}}

Q. Evaluate:

\frac{(3 \frac{2}{3})^{2} - (2 \frac{1}{2})^{2}}{(4 \frac{3}{2})^{2} - (3 \frac{1}{3})^{2}}

\div

\frac{3 \frac{2}{3} - 2 \frac{1}{2}}{4 \frac{3}{2} - 3 \frac{1}{3}}

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(b) Sameera purchased $3 \frac{1}{2}$ kg apples and $4 \frac{3}{4}$ kg oranges. What is the total weight of fruits purchased by her?

(c) Solve : $2 \frac{2}{3} + 3 \frac{1}{2}$ [4 MARKS]

Q. Add the following fractions:-

1 \frac{2}{5} + 3 \frac{1}{5} + 4 \frac{3}{5} = ?

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What fraction of a straight angle is a right angle?

The correct option is A 12A straight angle measures 180∘ and a right angle measures 90∘. ∴Measure of a right angleMeasure of a straight angle=90∘180∘ =12

The correct option is A $\frac{1}{2}$
A straight angle measures $180^{\circ}$ and a right angle measures $90^{\circ} .$

$∴ \frac{Measure of a right angle}{Measure of a straight angle} = \frac{90^{\circ}}{180^{\circ}} = \frac{1}{2}$