Minimum three noncollinear points are required to form a plane.
\ \Observe the figure; consider any three noncollinear points of the figure to name
\the plane. Total six planes are shown in the figure and they are:
\1. Plane ABC
\2. Plane DHF
\3. Plane AGE
\4. Plane BCD
\5. Plane CDE
\6. Plane ABH
\Six planes are there in the figure.