Chapter 9.1, Problem 75E

(a)

To determine

To fill: The blank in the statement, “$\text{m}\left(\measuredangle 1\right)+\text{m}\left(\measuredangle 2\right)=\_\_\_\_\_\_°$” using the following figure.

(b)

To determine

To fill: The blank in the statement, “$\text{m}\left(\measuredangle 2\right)+\text{m}\left(\measuredangle 3\right)=\_\_\_\_\_°$” using the following figure.

(c)

To determine

To fill: The blank in the statement, “$\left[\text{m}\left(\measuredangle 1\right)+\text{m}\left(\measuredangle 2\right)\right]-\left[\text{m}\left(\measuredangle 2\right)+\text{m}\left(\measuredangle 3\right)\right]=\_\_\_\_°-\_\_\_\_°$” using the following figure and results from part (a) and part (b):

(d)

To determine

To fill: The blank in the statement, “$\text{m}\left(\measuredangle 1\right)+\text{m}\left(\measuredangle 2\right)-\text{m}\left(\measuredangle 2\right)-\text{m}\left(\measuredangle 3\right)=\_\_\_\_°$” using the following figure.

(e)

To determine

To fill: The blank in the statement, “$\text{m}\left(\measuredangle 1\right)-\text{m}\left(\measuredangle 3\right)=\_\_\_°$” using the following figure.

(f)

To determine

To fill: The blank in the statement, “$\text{m}\left(\measuredangle 1\right)=\text{m}\left(\measuredangle \_\_\_\_\right)$” using the following figure.