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ze4life
State the principal definition or theorem that enables you to deduce or prove, from the information given,that quadrilateral PQRS is a parrallelogram. PQ=SR;PQ||SR PQ||SR;PS||QR <PSR=RQP;<SRQ=QPS PQ=SR;PS=QR PA=1/2 PR;SA=1/2 SQ
@ze4life Please provide the diagram and instructions. This looks as if it might be a question about various quadrilaterals.
What exactly is the end result you are trying to deduce or prov, of the statements given?
The attached chart displays the theorems used to prove that a quadrilateral is a parallelogram. Please review them.
@ze4life I'll help you get started by working the first two problems. ------------ 7) If one pair of opposite sides of a quadrilateral are both congruent and parallel, the quadrilateral is a parallelogram. |dw:1359783930539:dw|
8) A quadrilateral with both pairs of opposite sides parallel is a parallelogram. You can just answer "Definition of parallelogram." |dw:1359784112088:dw| @ze4life If you post what you think are the reasons for problems 9 -11, I will check them for you.
all of these are requirements for a parallelogram based on the definition of a parallelogram, in other words, it is defined to be the shape where all of these things hold true
@ze4life Learn the Geometry theorems and you will be able to understand how to do the problems.