In the figure below, the triangle on top has been transformed to the one on the bottom by a 90° counterclockwise rotation about .

figure

a. Complete the congruence statement.

△BUT ≅ △ _

b. Explain how you know that the triangles are congruent.

Which verbal expression best describes the algebraic expression 3x ÷ 5? the quotient of three times some number and five the product of some number and five divided by three the quotient of three and some number times five the sum of three and some number divided by five