The reference angle for an angle whose measure is 260° is

So, 260 degrees is in the 3rd quadrant, only 10 degrees away from being straight down at 270 degreesif you have a xy axis, and draw a line segment from the origin into the 3rd quadrant, then at the endpoint of that segment, draw back up to the x-axis, your reference angle is the angle that the line segment makes with the x-axis (in this case, the negative portion of the x-axis), which is 80 degreessince 260 degrees is 80 degrees past 180.

So your answer is 80 degrees.

Hope this helps,

Brian

It is rigid. it is isometric. the size is preserved.