The proof that δabc ≅ δcda is shown. given: ∥ and ∥ prove: δabc ≅ δcda what is the missing reason in the proof? statements reasons 1. ab ∥ cd; bc ∥ da 1. given 2. quadrilateral abcd is a ▱ 2. definition of parallelogram 3. ab ≅ cd; bc ≅ da 3. opposite sides of a parallelogram are ≅ 4. ac ≅ ac 4. reflexive property 5. δabc ≅ δcda 5. ? perpendicular bisector theorem pythagorean theorem hl theorem sss congruence theorem

What is the missing reason in step 5? linear pair postulategivendefinition of complementary anglescongruent complements theorem

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

Using pert, adam munson was able to determine that the expected project completion time for the construction of a pleasure yacht is 21 months, and the project variance is 4. a) what is the probability that the project will be completed in 17 months? b) what is the probability that the project will be completed in 20 months? c) what is the probability that the project will be completed in 23 months? d) what is the probability that the project will be completed in 25 months? e) what is the due date that yields a 95% chance of completion?