Question

The flow chart with missing reasons proves that consecutive angles of a parallelogram add to 180°.

Which reason can be used to fill in the blank spaces?

Angle Addition Postulate

Definition of a Quadrilateral

Definition of Parallel Lines

Definition of a Parallelogram

Answer 1

so what is your opinion please ?

Answer 2

im thinking its definition of parallel lines

Answer 3

really thats the only one to me that seems to make sense, or possibly the last one.. def of a parallelogram..

Answer 4

so the first one what you have wrote there now can you tell me why ?

Answer 5

well i mean, im not rly good at geometry, more of an algebra guy, but i thought its because its talking about parallel lines so, it was kind of an assumption. number 1. is wrong though , number 2 i wouldn't think much of so, i kind of based it was either the 3rd or 4th. elimination i guess you could say.

Answer 6

so than the first one you have told why
the second not can being because one trapezoid is quadrilateral too
3-rd can being the same like 4rd

yes ?

Answer 7

yea, but im stuck between the 3rd and fourth.

Answer 8

so i think that the same 3rd and 4rd are true every two

Answer 9

so im gona go with the parallel lines then i guess..

Answer 10

ok

good luck

bye

Answer 11

tnx, cya.