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Mathematics 19 Online
OpenStudy (anonymous):

???????

OpenStudy (anonymous):

OpenStudy (michele_laino):

hint: the triangles ABC and ADC are right triangles

OpenStudy (anonymous):

okay so AD = 3 in and BC = 2 in and their final side is 13?

OpenStudy (acxbox22):

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OpenStudy (anonymous):

parallelogram

OpenStudy (michele_laino):

those triangles, are congruent each other, since, in addition, they have one side equal to the radius of your circumference

OpenStudy (anonymous):

so the perimeter is 10 inches?

OpenStudy (michele_laino):

that's right!

OpenStudy (acxbox22):

yes perimeter is 10

OpenStudy (anonymous):

and is it a parallelogram ?

OpenStudy (acxbox22):

no try again the sides arent parallel

OpenStudy (michele_laino):

no it is not, since, by definition, a parallelogram has parallel sides congruent each other

OpenStudy (anonymous):

rhombus

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