Answer:
They are.
Step-by-step explanation: The postulate is that all the adjacent angles and side lengths are equal between the triangle pairs. Congruency is if all side lengths and angles measure the same amount. In this case, the lines signify that they do.
b
Step-by-step explanation:
i just took it on edge
ray
The equation would be x^2 + y^2 = r^2
This is the base form of any circle. In this case, you would need the value of the radius to finish the equation.
