Right triangles trigonometry trigonometric ratios and finding missing sides

Aplot of land has been surveyed for a new housing development with borders ab, bc, dc, and da. the plot of land is a right trapezoid with a height of 60 feet and an opposite leg length of 65 feet

Which graph represents the parent function of y=(x+2)(x-2)

Which geometric principle is used to justify the construction below?