To find the x value... First of all, we know that all angles in the triangle total up to 180 degrees. Also, we know that because it is a right angle, there is a little square that means 90 degrees. we are given one of the angles as 25 degrees
Let's make an equation to solve for the value x then the angle measure 3x + 11 + 25 + 90 = 180 combine like terms 3x + 126 = 180 subtract 126 from both sides to start isolating the variable x 3x = 54 now we will divide both sides by 3 to isolate the variable x x = 18
Now we aren't done plug in the value of x into the angle we have to solve for 3x + 11 3 ( 18) + 11 54 + 11 65 The missing angle measure is 65 degrees
