Answer:

Step-by-step explanation:
Simplify:
45 = 5 * 3 * 3
60 = 5 * 3 * 2 * 2
GCF = 5*3 = 15


Answer:
Symmetry
Step-by-step explanation:
Because the two sides are equally the same. Basically identical.
M<ABC= (AD+CE)/2=(100+45)/2=145/2
m<ABC=72° 30'
I think it’s 8 if I’m not mistaken