Answer:
50 degrees
Step-by-step explanation:
53+77= 130
180-130= 50
Answer: 50º
You know that the sum of all of the angles of a triangle are equal to 180º. Given 2 angles, we can use an equation to find the third angle. Let angle C be x
53º+77º+x=180º
130º+x=180º
Subtract 130
x=180º-130º
x=50º
