The sum of the three angles in a triangle is 180 degrees. One of the angle measures 30 degrees, and the second angle measures 75 degrees. What is the measure of the third triangle?

75 degrees

Step-by-step explanation:

30 + 75 = 105

180 - 105 = 75

Answer: the measure of the third triangle is 75 degrees.

Step-by-step explanation:

Let the measure of the third angle be x degrees.

The sum of the three angles in a triangle is 180 degrees.

One of the angle measures 30 degrees, and the second angle measures 75 degrees. Therefore,

30 + 75 + x = 180

105 + x = 180

Subtracting 105 from the left hand side and the right hand side of the equation, it becomes

x = 180 - 105 = 75 degrees