The third side of the triangle with length 4 and 9 could be 6.
The third measure of the angle of the equilateral triangle is 60 degrees.
The triangle that has a measure of 70 degrees and 30 degrees has the third measure as 80 degrees.
What are triangles?
Triangles are polygon with three sides.
Using the triangle inequality theorem, the sum of 2 sides of a triangle must be greater than the third side.
Therefore, the length of the third sides should be 6.
4 + 6 > 9
An equilateral triangle has all its angles equal to each other. Therefore, each angle of a triangle is equals to 60 degrees. Therefore, the third measure is 60 degrees.
The sum of angle of a triangle is 180 degrees. Therefore, the third angle is as follows;
180 - 70 - 30 = 80 degrees
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