Fill in the blanks: The sum of measurement of the supplementary angle is _____.

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Solution

Sum of the measurement of supplementary angles
The sum of the measurement of the supplementary angle is $180^{\circ}$ .
For example: Consider figure below,

Here, $∠ A B C$ and $∠ D B C$ are supplementary angles
Where, $∠ A B C + ∠ D B C = 180^{°}$
Therefore, $∠ A B C & ∠ D B C$ form a linear pair
Hence, the sum of the measurement of the supplementary angle is $180^{\circ}$ .

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