What is the distance AC in this diagram called? (Hint: What part of the circle is it?) How does it compare to AD?

△cde maps to △stu with the transformations (x, y) arrowright (x − 2, y − 2) arrowright (3x, 3y) arrowright (x, −y). if cd = a + 1, de = 2a − 1, st = 2b + 3 and tu = b + 6, find the values of a and b. the value of a is and the value of b is .

Aquadrilateral has exactly one pair of parallel sides. which name best describes the figure?

Which expression gives the exact value of x?