Mathematics in the third grade is round. Write down the steps clearly

(1) because d=4cm r=5cm.

So the straight line l is separated from the circle at this time.

Second, the solution: because straight lines and circles have one thing in common.

So the straight line is tangent to the circle.

Then d=r= 10cm.

So the distance from the center of the circle to the straight line is 10cm.

(1) Intersection 2

(2) Tangency 1

(3) Phase separation 0

Solution: Because the diameter of ⊙O is 10 cm.

So r=5cm.

And because the distance from the center O to the straight line AB is 10 cm.

So d= 10cm.

d>r

Then ⊙O is separated from the sub-rows.

It's over. It's over. . . Oh, the third question has the same steps as the first question. Because you fill in the blanks, I have no writing process.

You see, I wrote so much,,,