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help.

chitsuii  Jun 28, 2018

Best Answer 

 #1
avatar+7266 
+2

If we drew a line connecting the two vertices that are furthest from each other, we would create two triangles, and by SSS, these triangles would be congruent.

 

And  n°  would be the same as the measure of its corresponding angle, which is  142° .   So...

 

n  =  142

 

In every quadrilateral, the sum of the interior angles  =  360° ,   so....

 

m  =  360 - n - 142 - 20  =  360 - 142 - 142 - 20  =  56

 

m  =  56

hectictar  Jun 28, 2018
 #1
avatar+7266 
+2
Best Answer

If we drew a line connecting the two vertices that are furthest from each other, we would create two triangles, and by SSS, these triangles would be congruent.

 

And  n°  would be the same as the measure of its corresponding angle, which is  142° .   So...

 

n  =  142

 

In every quadrilateral, the sum of the interior angles  =  360° ,   so....

 

m  =  360 - n - 142 - 20  =  360 - 142 - 142 - 20  =  56

 

m  =  56

hectictar  Jun 28, 2018

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