Answer:

Step-by-step explanation:
Given:
The two points on the line are:

Now, for a line with two points on it, the slope of the line is given as:

For the points
, slope is:

Now, for a line with slope 'm' and a point
on it is given as:

Plug in all the values and determine the equation of the line. This gives,

Therefore, the equation of the line is:

Use TrianCal to draw a triangle with phi as Great Piramid (minimum perimeter given 2 equal heights) = maximun stability.
NOTE: Phi=(1+√5)/2≈1.62 and acos(1/Phi)≈51.83º
You can do that by simply measuring the main angle and then measuring each of the two angles. If you bisected the angle correctly, you will find that each of the two angles is equal to half the original.
You can measure the angle by following these steps:
1- Place the straightedge on the base of the angle.
2- Slide the protractor over it until the vertex of the angle is at the zero of the protractor.
3- Measure the angle.