The triangles are not the same size so a dilation made the original one smaller and a translation moved it to map ABC to A'B'C'.
The answer you are looking for is B. 15
Answer:
Perimeter: 18.5
Area: 15
Step-by-step explanation:
P = a + b + c
P = 5 + 6 + 7.5
P= 18.5
A = 1/2bh
A = 1/2*7.5*4
A= 15
49 is not a prime number, 7*7 is 49 so if you have 7 selves you can fit 7 books on to each self