Please help I need the answers asap

Question

Question 4

A tangent is...

Choose one answer.

	...the third, unequal side of an isosceles triangle.
	...a chord of a circle that contains the center of the circle.
	...a line in the plane of a plane of a circle that intersects the circle in exactly one point.
	...a segment joining the center of a circle to a point of the circle.

 

Question 5

What is the measure of arc AB?

Choose one answer.

	70º
	35º
	110º
	104º