I am sorry i dont understand
The A/= it means the answer is okay.
Step-by-step explanation:
sum of the ratio=3+3+4=10
now,
angle I = 3/10×180=54
angle II= 3/10×180=54
angle III=4/10×180=72
that shows th given triangle is isoceles
The identity property of addition states that a + 0 = a
Your answer is identity property of addition.