I'm sorry but what are we answering? i'd love to help but i'm confused
Let's begin noting that a triangle is isosceles if and only if two of its angles are congruent. We can thus find the angle <ABP, recalling that the sum of the interior angles of a triangle is equal to 180°.
![\angle \: ABP = \frac{180 - 80}{2} = 50 \degree](https://tex.z-dn.net/?f=%20%5Cangle%20%5C%3A%20ABP%20%3D%20%20%5Cfrac%7B180%20-%2080%7D%7B2%7D%20%20%3D%2050%20%5Cdegree)
Finally, let point K be the intersection between segments BC and PQ, and let's note that the triangle PQB is a right isosceles triangle, since all the angles in a square are equal to 90°, and the two triangles APB and BQC are congruent.
Therefore, the angle BKQ is equal to 180-50-45=85°.
Of course angle BKP=180-85=95°.
Hope this helps :)
The answer is $382.80. the perimeter is 600ft. if fence post are placed every five feet, you need 120 post because 600÷5 is 120. each post cost 3.19 so you need 382.80 because 3.19×120 is 382.8