Based on the diagram below, an object starts at position A and then travels a distance "a" and to get to position B then travels a distance "b" to get to position C. Let's say this all takes a time "t" to happen.
Step 1) Draw the displacement vector for this situation on the diagram below.
Clear All Draw: 

Step 2) Give the algebraic formula for the magnitude of the average velocity in the box below.
displacement =