The polygon has three sides and is therefore a triangle. The formula for calculating the area of a triangle is:
A=1/2bh.
If the segments BF and FA are perpendicular to each other we can use them as our base and height. To confirm that these two segments are perpendicular, we will first find their slopes and then compare them to see if the slopes are negative reciprocals.
Two lines are perpendicular to each other if the product of their slopes is - 1.
m_(BF)* m_(FA)=1*(- 1)=- 1
Here the product is -1. So, the lines are indeed perpendicular.
Calculating Leg Lengths
Let's use BF as base. We calculate its length using the Distance Formula.
