Which statement correctly names the congruent triangles and justifies the reason for congruence? a coordinate plane with triangles ABC and FED at A 0 comma 0, B 4 comma 0, C 1 comma 3, D 5 comma 2, E 8 comma 5, and F 8 comma 1, segment AC measures 3 and 2 tenths units, angle A measures 72 degrees, segment DF measures 3 and 2 tenths units, and angle F measures 72 degrees

ΔABC ≅ ΔFDE by HL
ΔABC ≅ ΔFED by SAS
ΔABC ≅ ΔDEF by HL
ΔABC ≅ ΔDEF by SAS

Two lines parallel to the same plane are parallel to eachother

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

Non-euclidean geometry was discovered when, in seeking cleaner alternatives to the fifth postulate, it was found that the negation could also be true a. true b.false