Muscle on the front of the arm

Maggie graphed the image of a 90 counterclockwise rotation about vertex a of . coordinates b and c of are (2, 6) and (4, 3) and coordinates b’ and c’ of it’s image are (–2, 2) and (1, 4). what is the coordinate of vertex a.

Answers to the concentration of medication question

What is crystallographic data processing and structure determination? what are the physical infrastructures of x-ray crystallographic structural biology? who can tell me detailed information? any would be appreciated. in advance!