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Q: What is The measurement of an exterior angle of a triangle is equal to the sum of?

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No. It is equal to the sum of the opposite interior angles.

You have to extend the line opposite to the 2 angles For example, if u have a triangle ABC, and if BC is the base, then if u produce BC, the exterior angle formed will be equal to angle A + angle B OR if u produce CB then the exterior angle will be equal to angleA+ angle C This is true about all the sides(not only the base side) I just gave the base as an example

Yes, it is.

Such is called an exterior angle. A useful theorem is that an exterior angle is equal to the sum of its non adjacent interior angles.

an angle that forms a linear pair with one of the interior angles of the trinagle.(Apex)

Related questions

An exterior angle of a triangle is defined to be the angle between one side of a triangle and the extension of an adjacent side. The measurement of this exterior angle is equal to the sum of the two opposite interior angles. See the related links for diagrams and sample problems.

An exterior angle of a triangle is equal in measure to the sum of the other two interior angles.

measure of exterior angle of triangle is equal to sum of interior angles. for eg. In triangle ABC, angle C is exterior angle angle A and angle B are interior angles so, C=A+B

any other exterior angle of the triangle * * * * * No. The sum of the two opposite interior angles.

The opposite exterior angle.

In any triangle exterior angle plus interior angles = 180 degrees

No. It is equal to the sum of the opposite interior angles.

120 degrees.

The exterior angle of a triangle is equal to the sum of the two opposite interior angles. So if a triangle had points A, B and C: The exterior angle at B would equal the sum of interior angles at A and C. Similarly, the exterior angle at C would equal the sum of interior angles at A and B And the the exterior angle at A would equal the sum of interior angles at C and B.

never

They equal the supplement of the interior angle it is adjacent to. (180-int. angle) E.g: the exterior angles of an equilateral triangle are each equal to 120 degrees.

Exterior angle.

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