What is angle sum property of a triangle?

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Solution

Angle sum property.
Angle sum property states that the sum of all three interior angles of a triangle is $180 °$ .
The exterior angle of a triangle measures the same as the sum of its two opposite interior angles.
In any $∆ A B C$ , the angle sum property formula is $∠ A + ∠ B + ∠ C = 180 °$ .
Thus, angle sum property states that the sum of all three interior angles of a triangle is $180 °$ .

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