Answer:
1
Step-by-step explanation:
For any triangle, you only need to know 3 pieces of information out of the 6 angles and sides to solve for the rest of the triangle.
4=1 1 1 1
5= 1 1 1 1 1
So this means 5 and 4 are not equal
An=Asub1(r)n-¹
=5(-2)7-¹
=5(64)
A7=320
