Understand that a function<span> is a rule that assigns to each input exactly one output. The graph of a </span>function<span> is the set of ordered pairs consisting of an input and the corresponding output.</span>
X is 90 degrees. If AB is the diameter, then it passes through the centre. X is 90 degrees because the angle in a semicircle is always a right angle.
The perimeter of the triangle, rounded to the nearest tenth, is 8.5 units.
I know how to but i don't know how to reply with a picture
