Find the area of a circle if x=12 and y=3

Will mark determine whether the conjecture is true or false. give a counterexample for any false conjecture. given: points r, s, and t conjecture: r, s, and t are coplanar. a) false; the points do not have to be in a straight line. b) true c) false; the points to not have to form right angles. d) false; one point may not be between the other two.

Will give a: 122 b: 90 c: 48 d: 180

Measure a and b and find their sum. how are the angles related?