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RS Aggarwal Solutions Class 7 Mathematics Solutions for Lines and Angles Exercise 13 in Chapter 13 - Lines and Angles
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Find the angle which is equal to its supplement.
Answer:
Let the measure of the required angle be x^{0}.
Then,
\begin{array}{l} =x+x=180^{\circ} \\ =2 x=180^{\circ} \\ =x=180 / 2 \\ =x=90^{\circ} \end{array}
Hence, the required angle measures 90^{\circ}
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