Write a recursive formulaſ for an, the nth term of the sequence 18, 15, 12,

What is the value of x? enter your answer in the box. (cm)

Which is a logical conclusion based on the given information? a. figure abcd is a rhombus by the definition of a rhombus. b. segment ac is congruent to segment dc by cpctc. c. angle acb is congruent to angle adc by the angle-side-angle theorem. d. triangle acd is congruent to triangle cab by the hypotenuse-leg theorem.

Corresponding angles are a. always b. sometimes c. never congruent