1. Because triangles are the only rigid structures. 2. A triangle can be embedded inside another triangle. 3. A triangle can be embedded inside another triangle. 4. This becomes an isosceles triangle - 5. The right-angled triangles began to appear on the screens. 6. But give a child a triangle, 7. The result of multiplying the two numbers inside every triangle is {0}. 8. Is you bend both these legs into a triangle, 9. The resulting triangle is isosceles. 10. The triangles are made by connecting the following points: {0}
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