Find the measure of the indicated angle

52°

Step-by-step explanation:

x = 51

Step-by-step explanation:

The triangle is isosceles. The markings tell us that.

The 78 is not opposite either one of the equal sides. Let the angle values opposite the equal sides be x

x + x + 78 = 180                      All triangles = 180

2x + 78 = 180                         Subtract 78 from both sides.

2x = 180 - 78

2x = 102                                 Divide both sides by 2

x = 102/2

x = 51

So x = 51

a

step-by-step explanation:

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