Answer:
a=45°
Step-by-step explanation:
It should equal to 360° so if u add 115+110+90, you get 315 and you subtract that from 360. 360-315= 45
A) 45
The shape is like a rectangle, in which all angles together would equal 360 (one angle is about 90 degrees, 90x4=360). If you add all the angles together, you recieve 315. 360-315=45.
