By the , we know that angle 1 is congruent to angle 3. the measure of angle 1 equals the measure of angle 3 by the definition of angles. then, using the property, the measure of angle 3 is degrees.

Maria heard on the radio that the high temperature that day would be to determine the temperature in degrees celsius, she used the formula , where c is the temperature in degrees celsius and f is the temperature in degrees fahrenheit.