Which of the following best describes the circumference of a circle? a. the distance across the middle of the circle b. a segment that connects any two points on the circle c. the distance around the circle d. a segment that connects any point on the circle to its center

Factor the expression using the gcf. the expression 21m−49n factored using the gcf

The functions f(x) and g(x) are shown in the graph f(x)=x^2 what is g(x) ?

Statements reasons 1. ab ≅ cd; ad ≅ bc 1. given 2. ac ≅ ac 2. reflexive property 3. △adc ≅ △cba 3. ? 4. ∠dac ≅ ∠bca; ∠acd ≅ ∠cab 4. cpctc 5. ∠dac and ∠bca are alt. int. ∠s; ∠acd and ∠cab are alt. int. ∠s 5. definition of alternate interior angles 6. ab ∥ cd; ad ∥ bc 6. converse of the alternate interior angles theorem 7. abcd is a parallelogram 7. definition of parallelogram what is the missing reason in step 3?