What comes to mind when you see a triangular object

Seeing this, I thought of three straight lines connecting a family of three, with a sturdy triangular bracket supporting the family. To support this scaffold, it takes the hearts of three people to come together, and no matter the ups and downs, this scaffold firmly supports the family. What is this bracket?

It's the power of love.

Seeing this, I thought of the eternal stability of the triangle, which requires the three sides to work together to make it stronger and stronger, no matter who is longer or shorter. So, I think this represents unity.

Seeing this, I thought of a white sail. This is the sail of friendship, which promotes the friendship between two people to be more pure and powerful, so that friends can share the sunshine and share the wind and rain. It makes the power of friendship enormous, step by step.

Seeing this, I thought of a green pine tree standing on the top of a mountain, which has survived the wind and rain, the scorching sun, and the snow and hail, but still stands on the golden earth. So, I think this means being brave and being strong.

Seeing this, I thought of a towering mountain, no matter how high the mountain is, it will slowly turn from a flat land into a big mountain, and it can only slowly become a big mountain if it persists. So, I think it means growth.

Seeing this, I thought of a smiling face, with a mouth like a crescent moon hanging underneath, and two inverted triangle thick eyebrows and big eyes on it. Seeing these words always makes people feel very beautiful. Yes, that emoji is a smile.

In fact, it is a gesture of staring eyes and grinning, and I hope that everyone can walk into the school gate with a smile on their faces in the future.

In daily life, there are many "triangular" items, which are roughly listed as follows:

1. Roadside signs. It is usually a triangle and serves as a warning or reminder sign.

2. Kites. <>

3. an ashtray.

4. Bicycles.

Arrows of directional signs, triangular roofs, triangular tents, hourglasses, barricades, triangular kites, red scarves, tripods, tripods, peaks, triangular irons, triangular hangers, cable-stayed bridges, humps, pennants, triangular boards, ......

He has a very important stability!

Triangle board bike pyramid sand pile.

Briefs, three-point, a mountain, pyramids, sand piles

From the bottom of the net, it is a square, because the pyramid is a regular quadrangular pyramid, of course, even if the pyramid is not a regular quadrangular pyramid, but a regular triangular pyramid, or even a regular tetrahedron (I don't know if you have learned the regular tetrahedron, here I give its definition: each face is an equilateral triangle of the tetrahedron called the excitation foci to do the regular tetrahedron, in fact, it is equivalent to zongzi, if you still can't imagine it, go to the Internet to find the zongzi Rubik's cube**), from some angles, it is still not a triangle, very simple, Your mind is fixed, and you think that you can only look at an object from one or several sides of it, but in fact, you can see it from any angle, such as from a certain side or a certain angle. As another example, if I say that a cube is seen from all directions, it is a square, right?

You might feel right, because you only think of looking at it from the six sides of a square, but actually, if you take a cube and have its corners facing you, then the cube you see is a hexagon, and you can look at it from many other angles, and it may not be a square, it may be a hexagon, it may be something else. The same goes for a tetrahedron, if you look at it from just four sides, then of course each face is an equilateral triangle, but if you make one of its edges facing you, and you look at it again, you will see that it is a square, and then you change the angle, and it will change into something else. And when it comes to the pyramid, it's even simpler, because the pyramid not only has three edges, but also four edges, if it is a four edge, it looks like a square from the bottom, even if it is a three-edged one, according to my analysis above, when you look at it from one of its edges, it becomes a quadrilateral (it can only be guaranteed to be a quadrilateral, not a square), not a triangle.

So your question is actually very simple, but I wonder why your teacher can't even understand such a simple question, of course, I don't doubt your teacher's ability, your teacher Ken Mingxiang will do it, but why can't he understand it? In this regard, I suggest that you play the Rubik's Cube in your spare time, try to contact the third-order Rubik's Cube and the Zongzi Rubik's Cube, of course, provided that your curriculum is not too close, I feel that you should be junior high school now, junior high school is fine, at least you can play on Saturdays and Sundays, if it is high school, it will be tighter, or focus on academics. However, when I have spare time, I still play Rubik's Cube Banquet, which greatly improves this ability.