Posted by Rachel on Tuesday, February 14, 2012 at 12:59am.
If two angles are 120, then the other two must total 360-2*120 = 120
So each other angle is 60.
When you draw diagonals in a rhombus, they form right angles at their intersection.
So, what we have after we draw in the diagonals, is 4 triangles. Each triangle is 30-60-90. And the hypotenuse is 6.
Using the properties of a 30-60-90 you can get the length of the other two legs.
Once you have that info, finding the area is easy A=bh/2
Since you have 4 congruent triangles, the total area is 4 times the area of a single triangle
i have the same question in my class too so thank you
If X = 9 cm and Z = 15 cm, what is the length of Y
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