Which type of triangle has all sides equal?

Which theorem states that the sum of the angles in triangle is 180 degrees?

What is the measure of angle C in the given triangle

if m∠A = 30 and  m∠B = 70; what is m∠C ??

What is the value of x and y ?

Which theorem states that the sum of the two shortest sides of a triangle is greater than the longest side?

Which three length create a triangle?

What is the range of possible third side measures using 10 and 15?

Which length would be the possible third side given the length 10 and 15?