Two angles are supplementery. They have the following measures: m ACB= X degrees and m BCD= 26 degrees. What is the measure of ACB?

1 answer

If two angles are supplementary, their measures add up to 180 degrees. Let's call the measure of angle ACB as x.

Since m(ACB) + m(BCD) = 180, we can plug in the known values:

x + 26 = 180

To solve for x, subtract 26 from both sides:

x = 180 - 26

x = 154

Therefore, the measure of angle ACB is 154 degrees.