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Let's see the remarkable property that connects three angles of a triangle.
The sum of the measure of three angles of a triangle is 180°.
Example:
Consider a triangle ABC with interior angles measures ∠1, ∠2 and ∠3.
By the sum of measure of angles of triangle property, ∠1 + ∠2 + ∠3 = 180°.
Important!
In a triangle:
- If the measure of all angles are different, then all sides are different.
- If the measure of two angles are equal, then two sides are equal.
- If the measure of three angles are equal, then three sides are equal and each angle measures 60°.
- Sum of three angles of a triangle is 180°.
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