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Mathematics 21 Online
OpenStudy (ryanchick):

Math quetion which property is not a characteristic of a parallelogram . (A.)opposite sides are congruent. (B.)all angles are congruent (C.)opposite sides are parallel (D.)opposite angles are congruent

OpenStudy (mathstudent55):

|dw:1454429259330:dw|

OpenStudy (mathstudent55):

Look at each choice and compare it with the figure. What do you think?

OpenStudy (ryanchick):

all angles are congruent

OpenStudy (mathstudent55):

correct

OpenStudy (mathstudent55):

That property is true only if the parallelogram is also a rectangle.

OpenStudy (ryanchick):

thxs are you sure

OpenStudy (mathstudent55):

yes

OpenStudy (ryanchick):

do you need anything

OpenStudy (mathstudent55):

Do angles 1 and 2 look congruent to you? |dw:1454429446231:dw|

OpenStudy (ryanchick):

ya

OpenStudy (ryanchick):

i think there parelle

OpenStudy (mathstudent55):

The definition of a parallelogram is that it's a quadrilateral with opposite sides parallel. That means choice C is true. There are theorems that state choices A and D. Choice B is true only for rectangles, but not for parallelograms in general.

OpenStudy (mathstudent55):

|dw:1454429648917:dw|

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