The black triangles are similar. Identify the type of segment shown in blue and find the value of the variable. PLEASEE

Ageologist had two rocks on a scale that weighed 4.6 kilograms together. rock a was 0.5 of the total weight. how much did rock a weigh?

What is the area of the triangle 10 13 12

There is an entrance to the computer room at point e which lies on ab and is 5 feet from point a. plot point e on the coordinate plane. find the distance from the entrance at point e to the printer at point e