All three trains just arrived at the station. When will they next all arrive at the same time? Key. Red train 15 min. Blue train 10 min. Yellow train 12 minutes

Bplant 3 and 1 because if you look closely at the graph it will show how high it grew it was tricky but you'll get through with it

The median segment divides the triangle into 2 isosceles triangles and everything else is trivial.|ad|=|bc|2=|bd|soδadb  is isosceles with∠dab=∠dbasimilarlyδadc  is isosceles with  ∠dac=∠dca∠cab=∠cad+∠bad=∠acb+∠abctherefore∠cab  is a right angleandbc  is the hypotenuse of a right-angled triangle.hope this