An elliptical cylinder is sliced by a plane, as shown in the figure. among the four given two-dimensional shapes, shape is the resulting cross section

If 25% of y is 30, what is 60% of y?

1. 2. ∠b and ∠y are right angles. 3.? 4.? which two statements are missing in steps 3 and 4? ∠x ≅ ∠c △abc ~ △zyx by the sas similarity theorem. ∠b ≅ ∠y △abc ~ △zyx by the sas similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem.

Which of the following is true about the following construction of a tangent to a circle from a point outside of the circle?