Triangle ABC is isosceles. The vertex angle,∠B, is four times the size of the base angles. Which of the following are true? A. m∠B= 60°
B. m∠B= 120°
C. m∠A= 30°
D. m∠A= 60°
E. m∠C= 60°
F. m∠C= 30°

Write a numerical expression that satisfies all of the following conditions. 1.)the only number used in the expression is 5 2.)at least one exponent other than 1 is used 3.)when the expression is evaluated, the answer is greater than 40 and less than 50

What is the first step of an indirect proof of a number that is divisible by two

What other information do you need to prove triangle dac=bca by asa