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What are congruent angles?

An angle can be categorized based on its degree of measurement. For example, an acute angle is less than 90 degrees, while a right angle is exactly 90 degrees. An obtuse angle will be more than 90 degrees but measure less than 180, while a straight angle measures 180 degrees. Any two angles that share the same degree of measurement will be congruent.

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How do you divide integers?

Divide the absolute valuesDivide the absolute value of the first integer by the absolute value of the second integer. Ignore the signs when dividing. For example, -10 divided by -5 becomes 10 divided by 5, which is 2.Determine the sign of the answerDetermine whether the answer is positive or negative by looking at the signs of the original integers. If you divide integers with the same sign, the answer is always positive. When you divide integers with different signs, the result is always negative.Add the sign back in\n\n\nAdd the new positive or negative sign to your answer.

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What is a landmark in math?

The number system most often used for math today is base 10. According to Purple Math, base 10 means that the number system has actual numbers for one to nine, which start over at 10 by adding a one to the 10 column. (A base seven system only has numbers one through six.) Other bases are common for certain applications; for instance, computers use a binary system (base two).\n\nBecause the most common system is base 10, numbers in multiples of 10 serve as landmark numbers — as a sort of safe landing spot when doing calculations. When solving math problems, certain numbers make those calculat..

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What is a regular shape in math?

As well as having all sides equal in length, all interior angles must also be the same. For example, a triangle with three sides of equal length and all three internal angles of 60 degrees, which is also known as an equilateral triangle. However, not all regular shapes are equilateral because while an equilateral polygon can have all sides exactly the same length, they must also have the same internal angles.

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Where can you find solutions to pre-algebra homework?

At Math.com, students can solve homework problems by learning about topics, such as square roots, similar figures and dividing decimals, and then taking unit quizzes to review what they learned. Students who prefer to practice solving pre-algebra problems offline can print worksheets.\nMathPapa also offers free pre-algebra equation solvers, lessons and tutorials for common pre-algebra topics.

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How many cups are in a pound?

However, if the substance is known, one can find an online calculator that will help figure out how many cups of something equals a pound and vice versa. For example, a cup of Reese's Pieces candy weighs approximately 0.415 pound according to the weight to volume cooking converter found at Online Conversion. One can also covert manually to know the density of the substance.

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How is pi used in everyday life?

Pi is used for many different tasks in different professions and assists in different aspects of design work, particularly for round objects. Engineers who design things like tires, piping and tubing, round gaskets and balls use pi every day at work. For example, to determine the amount of material needed to make a basketball, designers used pi to figure out the surface area of a sphere of the appropriate size. Anytime a cylinder is made pi is used to determine the length required to wrap material all the way around it. Calculating the volume of a cylinder, cone or sphere also requires an oper..

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Does a regular pentagon have rotational symmetry?

A figure is said to have rotational symmetry if it can be rotated some number of degrees around its center point and still have the same appearance. Regular polygons all have rotational symmetry, and the order of their rotational symmetry is always equal to the number of sides. The angle of rotation for each turn is equal to 360 divided by the number of sides.

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What is an 11-sided shape called?

An 11-sided shape may also be called an undecagon or unidecagon, which is partly derived from the Latin word undecima, which means 11. However, most people prefer to use the word hendecagon because it consists of purely Greek words as opposed to a mix of Latin and Greek. Common properties of a regular hendecagon include 33-degree exterior angles and 147-degree internal angles. A real life example of a hendecagon is the rim of the U.S. Susan B. Anthony dollar coin.

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What is the Roman numeral for 6?

Similarly, when a smaller number precedes a larger number, the numbers are subtracted (IX is 10 minus 1, or 9). Roman numerals are a system of numbers that was used in ancient Rome. Common Roman numerals are I for 1, V for 5, X for 10, L for 50, C for 100, D for 500 and M for 1000.

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