The answer depends on what information you have,
If you know only the lengths of the sides, you use the cosine rule to find the measure of one angle and then the sine rule to find the other angles.
Chat with our AI personalities
you add it all
180 - 64.6 - 18.7 = 96.7 degrees
ABC angle is an angle,not a triangle!
40
It could be a right triangle if it has a right angle (90 degrees). If it does not have a right angle, then it is an acute triangle.