Math Problem There is an electric toy, which has a rectangular plate of 8 28 5 14 and

This question is not difficult, it is - horizontal rotation - vertical rotation - horizontal rotation - vertical rotation - at this time to the original position its rotation direction is not changed, it is clockwise, the total distance it travels is not difficult to see s=2*(

Number of laps n=s (2 r),

A to B turned (circled), and the baby face was in the same position as A in the B position;

B to C are turned (circled), and the baby face is in the opposite position of A in the C position (eyes are down, mouth is up);

C to D turned (circled), and the baby face was in the same position as C in the D position;

D to A turns (circles), and the baby face returns to the A position with the same position as A (eyes on the top, mouth on the bottom);

The small disc rotates 1+ times).

Hehe, it's hard enough for us, I didn't think about what this question asked for today.

What are you asking? It is recommended that you finish the question and ask the question, and we will do it for you.

What a broken question, I didn't write it completely!!

I turned around 3 times, and I don't know anything else.

The question of this spring hall cover is not difficult, it is - horizontal rotation - vertical rotation - horizontal rotation - vertical rotation - at this time to the original position its rotation direction is not changed, are all clockwise, the total distance it travels is not difficult to see s=2*(

Laps n=s (2 r),

1) A to B turned (circle), the baby face is the same as A;

B to C are turned (circled), and the doll is opposite to A up and down;

C to D turned (circled), and the baby face is the same as C;

D to A turns (circles), and the babyface returns to the A position;

2) The small disc rotates 1+ times);

The drawing is as follows: <>

3) cm), cm), , square centimeter), A: The area turned is square centimeter

A to B turned (circled), and the baby face was in the same position as A in the B position;

B to C are turned (circled), and the baby face is in the opposite position of A in the C position (eyes are down, mouth is up);

C to D turned (circled), and the baby face was in the same position as C in the D position;

D to A turns (circles), and the baby face returns to the A position with the same position as A (eyes on the top, mouth on the bottom);

The small disc rotates 1+ times).

Rotated 3 turns,-- b 1 turn, lap, lap - A3 turn.

According to the heart of the garden, a---b, move, n=1, the garden rotated in a circle, so that the garden turned back to its original place and made a total of 3 turns.

Painting to show intent? How many revolutions does the disc make?

A to B turned (circled), and the baby face was in the same position as A in the B position;

B to C are turned (circled), and the baby face is in the opposite position of A in the C position (eyes are down, mouth is up);

C to D turned (circled), and the baby face was in the same position as C in the D position;

D to A turns (circles), and the baby face returns to the A position with the same position as A (eyes on the top, mouth on the bottom);

The small disc rotates 1+ times).

A to B turned (circled).

B to C turned (circled).

The small disc rotates 1+ times).

The drawing is as follows: <>

<>2) (circle) is not careful.

Open the coarse (circle).

1+ circles) > Sidd - 4) (4) =

1) Dust socks A to B turned (circle), and the baby face is the same as A;

B to Brother Ming closed C turned (circle), and the doll was opposite to A up and down;

C to D turned (circled), and the baby face is the same as C;

D to A turns (circles), and the babyface returns to the A position;

2) The small disc rotates 1+ times);

The drawing is as follows: <>

3) cm), cm), , crack.

square centimeters), A: The area turned is square centimeters

It is easy to see from the diagram that the 4 corner discs of the rectangle cannot be touched, so let's look at the first movement, the movement from A to B, in fact, the distance of the round face sticking to the side of 8 and 24 only rotates AB, which is centimeters (the two corner round faces can't touch, so that distance is not calculated). Looking at the circumference of the round face = cm, it is easy to know that the round face just turned around, so the round face at B is exactly the same as the round face at A (I can't draw it, sorry ha). Look at the second part of the movement, from B to C, in the same way, the two corners of the round face can not touch, the actual dismantling of the clever move from the first is away from the first = cm, is half of the circumference of the round face, so in the second part of the movement the round face turns half a circle, and the round face at C is exactly upside down (can't be drawn.)

The third part of the movement, from C to D, is the same as the first part of the movement, it is also a circle, so the round face at D and the round face at C are the same, both are upside-down faces, as for the fourth part of the movement, from D to A, in the same way, after half a turn, the round face is exactly the same as at the A

So the round face turned a total of 1+ turns.

If you have any questions, please feel free to ask