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The formula to find the measure of an interior angle is 
, where 
represents the number of sides in the polygon. In this problem, would represent 
.
Let's plug in the value for
Let's simplify that.
Now we know that the <span>measure of an interior angle of a regular three-sided polygon is 60</span>°. Your answer would be B!
Let me know if you have any questions regarding this problem!
Thanks!
-TetraFish
Let's plug in the value for
Let's simplify that.
Now we know that the <span>measure of an interior angle of a regular three-sided polygon is 60</span>°. Your answer would be B!
Let me know if you have any questions regarding this problem!
Thanks!
-TetraFish
↝ Form into where a > 0 (Optional)
↝ Multiply -1 for both sides.
↝ Then proceed with the Quadratic Formula.
x = [-b ± (√b²-4ac)]/2a ↝ Quadratic Formula
↝ As you can see that inside the square root, the numbers cannot be negative. Therefore, the solutions are imaginary.
↝ Solution with Real Numbers System ↝ There are no real solutions.
↝ Solution with Complex Number System ↝
Therefore, the answer for Complex Number System is (5±√7i)/2