Which of the following statements about a plane is not true? 1. a plane can be thought of as flat. 2. the surface of a plane is made up of points. 3. a plane can be seen. 4. a plane extends infinitely in all directions.

Option C is the answer.

Step-by-step explanation:

1. A plane can be thought of as flat. This is true as a plane is a flat surface.

2. The surface of a plane is made up of points. It is also true as plane is also defined as a flat surface made up of points.

3. A plane can be seen. It is not true.an never be seen as it is a flat 2-D surface that goes up to infinity.

4. A plane extends infinitely in all directions. It is true.

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step-by-step explanation: