The diagram shows triangle ABC. Work out the sizes of angles x, y, and z.
+36916 *** EDIT ***
x + 110 = 180 (straight line)
x = 70 degrees
Bottom triangle x + z + 90 = 180
70 + z + 90 = 180
z = 20 degrees
Top triangle (angles sum to 180)
180 = 110 + 40 + y
y = 30 degrees
