If a triangle has angles of X+2, 2x, and 55. What are the three angle
measurements?

x+2+2x+55= 180

3x+57=180

3x=180-57

3x=123

x=123/3

x=41

x+2=41+2=43

2x=2*41=82

Step-by-step explanation:

Sum of a triangle = 180 degree

The best answer would be BC.

Step-by-step explanation:

BC is the best answer because diameter is a straight line segment that goes through the center of a  circle. Therefore BC is the best answer because it's the only chord that goes directly through the  circle. Hope this helps.