Triangles= 180° total
7a) this triangle has two equal sides; sorry I cannot draw it for you, but it has one very large angle and two small angles
7b) two equal angles
180°-2(27°)= 180-54=
126° third angle
7c) isosceles triangle
8a) this triangle has three equal sides; sorry I cannot draw it for you but all angles and all sides are equal
8b) 180°÷3= 60° angles for each
8c) equilateral triangle
Hope this helps! :)