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Mathematics 20 Online
OpenStudy (anonymous):

Give the name that best describes the parallelogram and find the measures of the numbered angles. The diagram is not to scale

OpenStudy (anonymous):

I know this is a rhombus, but i'm not exactly sure how to find the measures of the numbered angles..... Can any one explain?

OpenStudy (deoxna):

Can you upload the graph so we can see it?

OpenStudy (deoxna):

Also, the sum of all interior angles of a parallelogram is 360, if that helps.

OpenStudy (anonymous):

OpenStudy (deoxna):

Ok so, the angle opposite the 116º is also 116º. Taking the property I mentioned before: x+116+116=360 x=128 So each of the other two corners of the rhombus have angle 128/2= 64º. By the SAS theorem, both triangle are congruent. Since the triangle is isoceles, both acute angles are congruent (64/2 = 32º). So all 4 angles are congruent.

OpenStudy (anonymous):

Thank you so very much for your help, I appreciate it. can you help with another one?

OpenStudy (deoxna):

Sure thing

OpenStudy (anonymous):

Find the lengths of the diagonals of this trapezoid.

OpenStudy (deoxna):

|dw:1358824754812:dw|Hold on I just need to get the drawing in...

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