Answer:
I believe the answer is the second one
Step-by-step explanation:
Step-by-step explanation:
x=54
use pyth then the other line = 15
then 15÷90 = 9÷x
then x = 54
Hello my Kings and Queens the answer would be 60 degrees because all angles of a triangle always add up to 180 degrees
Step-by-step explanation:

Answer:
an isosceles triangle
Step-by-step explanation:
it has two equal sides so this is isosceles triangle