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Mathematics 13 Online
OpenStudy (anonymous):

Area of triangle ABC = 15.9 square units Area of triangle ACD = 19.6 square units Area of triangle AED = 17.5 square units A polygon ABCDE is shown. The vertices A and D are joined with a dashed line, the vertices A and C are joined with a dashed line. The area of Figure ABCDE is ______ square units. (Input whole number only.) Numerical Answers Expected!

OpenStudy (anonymous):

@mathmate

OpenStudy (mathmate):

Hm.. it seems that a figure of polygon ABCDE would help you a lot.

OpenStudy (anonymous):

Oh, I answered this the other day.

OpenStudy (anonymous):

You just add them up 15.9 + 19.6 + 17.5

OpenStudy (anonymous):

The triangles make up the whole figure.

OpenStudy (anonymous):

IF they are the same..please post the picture so we can be sure. @sjman1

OpenStudy (anonymous):

oohhh ok :)

OpenStudy (anonymous):

@iGreen.

OpenStudy (anonymous):

Yep, I was correct, you just add them up because the triangles make up the whole figure. So their areas combined will give us the total area of the entire figure.

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