Answer :

The measure of the exterior angle as shown in the triangle is 140°.

What is exterior angle?

Exterior angle is the angle between a side of a polygon and an extended adjacent side.

Exterior angle theorem: The exterior angle of a triangle is equal to the sum of the two opposite interior angles.

From the diagram below, applying the theorem above,

  • k = 64+76
  • k = 140°

Hence, the exterior angle is 140°.

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