I suppose you could turn it over on its side where one of the legs becomes the base.
The rigidity of the triangle derives from the fact that you cannot change any angle in a triangle without also changing the length of at least one side; in any other type of polygon, it is possible to alter the angles of the polygon without changing the lengths of the sides. So if you have a physical object in the form of a triangle, the sides are not going to change their length unless you break them. Other shapes can fold up, but triangles won't.
No. It is possible to change direction without changing speed. However, it is not possible to change direction without changing velocity.
The answer depends entirely on how the dimensions change. It is possible to change the dimensions without changing the perimeter. It is also possible to change the dimensions without changing the area. (And it is possible to change the area without changing the perimeter.)
The Pythagorean theorem applies specifically to right triangles because it defines a relationship between the lengths of the sides in a triangle where one angle is exactly 90 degrees. In this configuration, the lengths of the two legs (the sides forming the right angle) can be squared and summed to equal the square of the length of the hypotenuse (the side opposite the right angle). For triangles without a right angle, this relationship does not hold, as the properties of triangle geometry change, and the sum of the squares of the sides does not equal the square of the longest side. Thus, the theorem is uniquely suited to right triangles.
The two are not directly related. You can change the amplitude without changing the wavelength, and vice versa.The two are not directly related. You can change the amplitude without changing the wavelength, and vice versa.The two are not directly related. You can change the amplitude without changing the wavelength, and vice versa.The two are not directly related. You can change the amplitude without changing the wavelength, and vice versa.
yes
sauravv
Chemical change
a physical change
Given unchanging lengths of the sides, a triangle cannot change its shape. But given unchanging lengths of the sides of a rectangle, it can change its shape by some force by changing its angle measurements. If a 2d load were put on a rectangle, enough force could squish the rectangle into a parallelogram, whereas a triangle cannot change shape without changing the lengths of its sides or bending its sides out of shape (most likely into a curve).Given these properties, a rectangle can collapse its shape much more easily and is flimsy compared to a triangle.
No, you cannot change the bifocal prescription on glasses without changing the lens. The lens is what is prescribed by your eye doctor. The frame, however, can be changed.
Physical change.