The measurement of two angles of a triangle are 69 degrees and 34 degrees. Find the measurement of the third angle.

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To find the measurement of the third angle in a triangle, we can use the fact that the sum of the angles in a triangle is always 180 degrees.

Let's denote the measurement of the third angle as x.

Since we already know the measurements of two angles (69 degrees and 34 degrees), we can set up an equation to find the measurement of the third angle:

69 + 34 + x = 180

Now, we can solve for x by simplifying the equation:

103 + x = 180

To isolate x, we subtract 103 from both sides of the equation:

x = 180 - 103

Now we can calculate the value of x:

x = 77

Therefore, the measurement of the third angle is 77 degrees.