The minimum number of points of intersection of three lines in a plane is .

In the following angle, name the vertex, angle, and type of angle.

In the following angle, name the vertex, angle, and type of angle.

In the following angle, name the vertex, angle, and type of angle.

What is the magnitude of the angle formed between the two hands of a clock at $1:10$?

What is the magnitude of the angle formed between the two hands of a clock at $6:00$?

What is the magnitude of the angle formed between the two hands of a clock at $2:45$?