Respuesta :
Answer: A is 45 degrees, B is 45 degrees, C is 90 degrees.
Step-by-step explanation: A triangle is 180 degrees, and those three numbers add to that. This would be considered a right triangle due to the 90 degree angle.
Answer:
Step-by-step explanation:
In ABC, A and B have the same measure. This means that triangle ABC is an isosceles triangle. Therefore
A = B
The measure of C is twice the measure of A. This means that
C = 2A
The sum of the angles in a triangle is 180 degrees. It means that
A + B + C = 180 - - - - - - - - -1
Substituting A = B and C = 2A into equation 1, it becomes
A + A + 2A = 180
4A = 180
A = 180/4 = 45 degrees
The measure of angle A is is 45 degrees.
The measure of angle B is is 45 degrees.
The measure of angle C is 2 × 45 = 90 degrees.
