Best Answer

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

Q: How do you construct an exterior angle of a triangle where the sum of 2 of the interior angles is equal to an exterior angle?

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Actually, no. The sum of the exterior angles of a triangle is 360 degrees. The sum of the interior angles of a triangle is 180 degrees.

Construct an equilateral triangle which will have 3 equal interior angles of 60 degrees and 3 equal exterior angles of 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.

They are all 60 degrees.

In a triangle, each exterior angle is equal to the sum of the two opposite interior angles.

Related questions

Interior Angles of a Triangle: 60 Exterior Angles of a Triangle: 120 Interior Angles of a Heptagon 128 (approx) Exterior Angles of A Heptagon 52 (approx) Answer: Triangle

Actually, no. The sum of the exterior angles of a triangle is 360 degrees. The sum of the interior angles of a triangle is 180 degrees.

The interior angles of a triangle add up to 180 degrees. The exterior angles of a triangle add up to 360 degrees.

Construct an equilateral triangle which will have 3 equal interior angles of 60 degrees and 3 equal exterior angles of 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.

The sum of the interior angles of any triangle is 180 degrees.

The exterior sum of the angles of any polygon including a triangle is always 360 degrees.

They are all 60 degrees.

A triangle has 3 interior angles that add up to 180 degrees and 3 exterior angles that add up to 360 degrees

In a triangle, each exterior angle is equal to the sum of the two opposite interior angles.

An equilateral triangle.

Remote interior angles