Question

Point $D$ has coordinates as $(3,4,5)$. Referring to the given figure, find the coordinates of point $A$.

• A. $(4,0,0)$
• B. $(3,4,0)$
• C. $(3,0,0)$
• D. $(4,3,0)$

Answer 1

The correct option is C $(3,0,0)$

From the given figure, D has x-coordinate $=3$, y-coordinate $=4$ and z-coordinate $=5$.

The points A,B,D and G form a rectangle whose x-coordinate is same i.e. $3$.

Point A lies on x-axis and thus, y and z coordinates will be $0$.

Hence, coordinates of point A is $(3,0,0)$.