The third angle measures 50° and all sides have different lengths.
A triangle is a polygon with three sides and three angles. Types of triangles are isosceles, equilateral, scalene and right angled.
The sum of angles in a triangle is 180 degrees.
A triangle with angle measures of 100° and 30°, let x represent the third angle, hence:
x + 100 + 30 = 180° (sum of angles in a triangle)
x = 50°
Also, all sides have different lengths since all the angles are different.
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