Which geometric bodies in our life can be obtained by the rotation of plane figure? What plane figure can they be obtained by rotation? Give an example

Which geometric bodies in our life can be obtained by the rotation of plane figure? What plane figure can they be obtained by rotation? Give an example

Cylinder - a rectangle or square that is rotated
A sphere is obtained by the rotation of a circle
A cone is the result of the rotation of a triangle
It's not very clear what the other trapezoid is called

Fill in the blanks in math. It's very simple
1. Two straight lines intersect into four angles, and the sum of the degrees of two adjacent angles is 180 degrees. If one angle is 90 degrees, the other three angles are all 90 degrees, then the two straight lines are called ()
2. Two straight lines are parallel to each other, and the distance between them is ()
It's mainly because the following brackets won't --

1. Two straight lines intersect into four angles, and the sum of the degrees of two adjacent angles is 180 degrees. If one angle is 90 degrees, the other three angles are all 90 degrees, then the two straight lines are called (vertical intersection)
2. Two straight lines are parallel to each other, and the distance between them is (equal) everywhere

Is the motion of the train translation or rotation

Translation

A pile of coal weighs 2 tons, 1 / 4 of which is used, and 1 / 8 of which is used. There are () tons left unused, and () of the total amount is more than () used

A pile of coal weighs 2 tons, 1 / 4 of which is used, just 1 / 8 of which is used. There are still (4 / 7) tons left unused, and the rest is (3 / 4) more than the total amount used

What is the movement of the passengers on the train from station a to station B? Rotation or translation?

Translation

On filling in the blanks in Mathematics (very simple)
If the volume of the cylinder is 24 cubic centimeter, then the volume of the cone is () cubic centimeter; if the volume of the cone is 24 cubic centimeter, then the volume of the cylinder is () cubic centimeter
2. The volume of a cylinder is 8 cubic decimeters, the bottom area is 2 square decimeters, and the height is (); the volume of a cone is 8 cubic decimeters, the bottom area is 2 square decimeters, and the height is ()
Another question: one right side of a right triangle is 4cm. If you rotate the other right side as an axis, the volume of the cone is 50.24cm3. The bottom area of the cone is () cm2, the height is () cm, and the area of the right triangle is ()

If the volume of the cylinder is 24 cubic centimeter, then the volume of the cone is (8) cubic centimeter; if the volume of the cone is 24 cubic centimeter, then the volume of the cylinder is (72) cubic centimeter

The motion of is translation. The motion of is rotation

Windows, curtains, clocks, washing machines

A washing machine factory assembly workshop to assemble 1200 washing machines, if it takes up to 8 days to complete, then every day to (more or less) to assemble ----- washing machines

At least (150) sets per day

Does the steering wheel translate or rotate on a straight road?

Translation, why rotation?

Given that AB is the diameter of ⊙ o, - = - = -, the angle BOC = 40 degrees, then the angle AOE is equal to ()
BC CD DE
⌒=BC ⌒CD=⌒DE

Because - = BC - CD = - De, and the angle BOC = 40 degrees, the angle BOC = angle cod = angle DOE = 40 degrees, then the angle AOE = 180-40-40-40 = 60 degrees