KatoWolverine
contestada

Which relationship is always true for the angles r, x, y, and z of triangle ABC?


x + z = y
180 degrees − x = r
x + y + z = 180 degrees
x + y + z = 90 degrees

I don't think its c. because there is an exterior angle. I think it would be b.

Which relationship is always true for the angles r x y and z of triangle ABC x z y 180 degrees x r x y z 180 degrees x y z 90 degrees I dont think its c because class=

Respuesta :

DeanR

That's the second one,


180 - x = r


Whenever two lines cross we get congruent opposite angles and supplemental adjacent angles, i.e. they add to 180 degrees.


The first one is almost right; we have r+y+z=180 and r+x=180 so x=y+z not quite what was written.

The answer of this question is  A

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