Missing supplementary angle

#supplementaryangles#twoanglesaddto180#lesson10 Use the applet to practice finding the value of the missing supplementary angle. Practice first before you answer the questions You can change the value of <ACD (green angle) by moving or clicking on blue slider. Notice how the angle is named with points from the line and the vertex, C, is in the middle. Find the missing supplementary angle ,<DCB, value and check your answers. You should be able to teach how to find a missing supplementary angle value.

If <ACD is 100°, what is the measure of <DCB?

If <ACD is 125°, what is the measure of <DCB?

If <ACD is 48°, what is the measure of <DCB?

If given on angle measure, how do you find the missing supplementary value?

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