1.

In the figure, find the values of x and y. Is triangle ABC isosceles? If so name the equal sides.​

Answer»

x + 115 = 180 (LINEAR angles)
x = 180 - 115
x = 65

x+y+50=180 ( ANGLE sum property )
65+y+50=180
y+115=180
y=180-115
y=65

Since x=y we can SAY that triangle ABC is isocèles,
AB=AC ( isocèles property )


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