We need to apply triangle law in this part.
According to the triangle law, two vectors can be represented by two sides of a triangle in the same order.
This is where the head of a vector joined at the tail of another.
Write a vector equation (e.g., D + E + F = 0) that relates the vectors A, B, and C shown at right.
On the grid at right, draw a diagram that shows how to find the vector I that must be added to G to give the vector H. Clearly label this vector.
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