Q15 - Geometry

Question

A carpenter checks to see if a board is warped by laying a straightedge across the board in several directions. State the postulate that is related to this procedure.

Step-by-Step Solution

Answer

First: Two lines that are not parallel or overlapping will intersect if they are in the same plane. 

Second: Two lines that intersect define a plane.

Step 1. Observation from image.

From the image, Cameraman uses a tripod stand to place the camera

Step 2. Write first postulate.

As lines on the tripod stand are not parallel, so first postulate to describe this situation is 

Two lines that are not parallel or overlapping will intersect if they are in the same plane.

Step 3. Write second postulate.

As there are three lines that intersect on tripod stand but using the postulate that

“Two lines that intersect define a plane” so there are three different plains required to wrap the plain.