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A TriangleAns 2.An equilateral triangle has three axes of symmetry.A scalene triangle has none.An isosceles triangle is the only triangle with exactly one axis of symmetry.Whether an isosceles triangle qualifies as non irregular depends on your definition of regular.If the definition adopted allows an isosceles triangle to be regular, than any equilateral polygon can be converted into a figure that satisfies the question simply by increasing or decreasing the length of just one side by a small amount, symmetrically about its midpoint.The axis of symmetry will be the perpendicular bisector of the side whose length was changed.
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Different countries changed at different times so you will need to specify which country.
Chemical Reaction
no. speed of light is always constant . as long as the light stays in the same medium. the speed is generally slightly different in different media.
If the compass angle is changed, the entire geometric shape being drawn is different. For example, if a triangle is being drawn, it could change from an obtuse triangle from a ninety degree triangle.
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it has had a lot of construction
Click on the 'History of the Baseball' link on this page. It gives a really good answer and history of the baseball.Baseball has changed in so many ways. In 1845 it used to be more different then baseball played today.
Nitrogen is a nutrient that is changed by bacteria into different forms through a process called nitrogen fixation. Bacteria can convert atmospheric nitrogen (N2) into forms that plants can use, such as ammonium (NH4+) or nitrate (NO3-). This process is important for bringing nitrogen into the ecosystem and making it available for plant growth.
Better construction, lighter materials, repeating cartridges (vs. muzzleloading)
It hasn't changed that much.. Different shapes make different sounds, Different woods make different sound. The only thing that really changed is that there are new shapes but old ones are still being used.
cameras have changed by technology and are very different
changed different colors
Steel made it possible to build Skyscrapers. Answer "construction of skyscrapers"
Models need to be changed as often as deemed necessary by the market. Different types of models need to be changed at different times.
No it is not true. Energy can be changed into different forms.