Given: ABC

3 = 1

Prove:

AC = BC

Which of the following is the reason for line 4 in the proof?

Definition of isosceles triangle.
CPCTE
If two angles are equal in a triangle, then the sides opposite are equal.

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post