what is the formula to find the x in a triangle
angle+angle+angle=180
what is the formula to find the sum of the interior angle measures of the polygon
(n-2)180
what is the formula to find the measure of 1 interior angle in the regular polygon
(n-2)180/n
what is the formula to find the measure of 1 exterior angle in the regular polygon
360/n
determine the angle measures in the polygon
angle+angle=x
what is the formula to find the unknown side lengths
a to the 2nd power+b to the 2nd power= c to the 2nd power
ex of vertical angles
ex of supplementary angles
ex of corresponding angles
ex of alternate interior angles
ex of alternate exterior angles