The isosceles triangle shown is rotated about line k. the perimeter of the triangle is 58 units.
which best describes the resulting three-dimensional shape?
a. a cone with a base radius of 17 units
b. a cone with a base radius of 34 units
c. a cylinder with a base radius of 17 units
d. a cylinder with a base radius of 34 units

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