Answer:
-17
Step-by-step explanation:
-2(21/4)-2(13/4)
-(21/2)-26/4
-21/2-26/4
-42/4-26/4
-68/4
-17
All of them could be as A would be an equilateral B,C,D would be irregular triangles and 3 would be an Isosceles triangle but if you had to go with one it would be A
Answer:
A on edge
Step-by-step explanation:
