What construction does the image below demonstrate?

a an equilateral triangle circumscribed about a circle
b an equilateral triangle inscribed in a circle
c the circumcenter of an equilateral triangle
d the incenter of an equilateral triangle

Polynomial that can be factored as (3x-4)(3x+4)

Which table shows a proportional relationship between miles traveled and gas used?

Given: lines a and b are parallel and line c is a transversal. prove: 2 is supplementary to 8 what is the missing reason in the proof? statement reason 1. a || b, is a transv 1. given 2. ∠6 ≅ ∠2 2. ? 3. m∠6 = m∠2 3. def. of congruent 4. ∠6 is supp. to ∠8 4. def. of linear pair 5. ∠2 is supp. to ∠8 5. congruent supplements theorem corresponding angles theorem alternate interior angles theorem vertical angles theorem alternate exterior angles theorem