Which relationship is always true for the angles x, y, and z of triangle ABC? (4 points)

A triangle is shown with a leg extending past the top vertex. The vertices are labeled ABC. Angle y is located inside the triangle at vertex B. Angle z is located inside the triangle at vertex C. Angle x is located outside the triangle between side AC and the extended leg.
x + z = y
y + z = x
x + y + z = 180 degrees
x + y + z = 90 degrees

Question

Which relationship is always true for the angles x, y, and z of triangle ABC? (4 points)

A triangle is shown with a leg extending past the top vertex. The vertices are labeled ABC. Angle y is located inside the triangle at vertex B. Angle z is located inside the triangle at vertex C. Angle x is located outside the triangle between side AC and the extended leg. 
x + z = y
y + z = x
x + y + z = 180 degrees
x + y + z = 90 degrees

Astrid1 · Answer

Asked and answered here. https://questioncove.com/updates/560d3dd5e4b0065bb4d8f70f

Ryan10 · Answer

tnx

Extrinix · Answer

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