Math help please?

Could anyone please help me with these math questions.. ??





1. Find the value of x. ?


Isosceles triangle A B and C are congruent to sides A B and B C. Angle A is 3x + 4 and angle B is 40.





A) 12


B) 22


C) 45.3


D) 70





2. Find the value of x?


A triangle with interior angles are 2x + 40, 4x + ^2, and 6x. The exterior angles are 6x and 6x^2.





A) 4


B) 5


C) 7


D) 10





3. Find the measure of x and y.


A triangle with interior angles X, 112, and 47. The exterior angle at 47 is y.





A)x=31, y=123


B)x=159, y=21


C)x=21, y=133


D)x=68, y=43

Math help please?
sorry Q2 makes no sense (it could be me though)


1) B


2) -


3) C





sum of a interior angles of a triangle = 180


an isosceles triangle has 2 anges that are the same


an exterior angle is when you extend one of the lines and then subtract the interior from 180