The measure of two angles in a triangle is shown in the diagram.
Which equation can be used to find the value of z?
Responses
A 2(42) + z = 180
B 42 + 2z = 180
C 42 + 2z = 360
D 2(42) + z = 360
The correct equation to find the value of z would be:
B. 42 + 2z = 180
The sum of all angles in a triangle is 180 degrees, so the equation must reflect that.