In the diagram shown, and . What is ?
2. The measure of angle is .
3. The measure of angle is.
The measures and in the following figure.
In the given figure, and are vertical angles. So,
Put the given value of in the above equation to write
Now, in the figure, and are supplementary angles as they together form a straight angle. So,
Put the given value of in the above equation to write,
Finally, since in the figure c form a triangle, the sum of their measures should be equal to . So,
Put the earlier computed values of and in the above equation to write,
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