Which scale factors results in an enlargement of an image along an opposite ray?

Write a polynomial function f of least degree that has rational coefficients, a leading coefficient of 1, and the given zeros. 1, 2−√3

1. what is the measure of ∠abc? what is the measure of ∠abd?

If w = 6 units, x = 3 units, and y = 5 units, what is the surface area of the figure? 168 units2 240 units2 144 units2 96 units2