Before Christ
432 BC.
It is possible, depending on what on earth AC and BC are!
never A+ :))
2159 years
Just bc its math
Two fractions, a/b and c/d are equal if and only if the cross products ad and bc are equal.
12
5
If the cross-product are equal the ratios are equal. Thus, a/b = c/d if (and only if) ad = bc
To determine if segments AB and BC are on the same line, you need to check if points A, B, and C are collinear. This can be confirmed by examining if the slope of AB is equal to the slope of BC. If the slopes are the same, then segments AB and BC lie on the same line. Otherwise, they are not collinear.
Opposite sides of a parallelogram are equal. So ab = dc and ad = bc. But you are also told that ab = bc. So all four sides are equal. Opposite angles of a parallelogram are equal. So abc =90 degrees implies that cda is 90 degrees. The remaining two angles add up to 360 - (abc + cda) = 180 degrees and both are equal. So they, too , must be 90 degrees each. So all four angles are equal. A parallelogram with four equal sides and four equal angles is called a square.
It is 4207 years, remembering that there was no year zero.