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What are some examples of line segments in the home?

Comparing a line segment to a common object found in the home is one of the best ways to help students understand the concept. In geometry, a line extends indefinitely in either direction, but a line segment is a portion of a line with two given end points. Observing similarities between a line segment and everyday items, such as a book's spine or the edge of a table helps students grasp this sometimes confusing idea. Another way to demonstrate a line segment is to take it outside of the home. For example, the student and an adult could take a walk from their house, or "Point A," down th..

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What is the top number of a fraction called?

The numerator represents the number of parts and the denominator represents how many parts consist of the whole. It is possible for the numerator to be larger than the denominator, but fractions that represent a value of greater than one are "improper." When the numerator exceeds the denominator the fraction needs to be broken down further.\nThe denominator of a fraction can never be zero. However, a numerator can be zero and the resulting calculation returns a value of zero.

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How do you read a ruler?

Each large number on a ruler is indicative of one inch, and there are twelve inches on a standard ruler. Between the inch marks are smaller hash marks in one of four different sizes. The largest mark after the inch line is the halfway mark. The second largest are two hash marks which denote the one-quarter and three-quarter points as read from left to right. The third largest marks represent the one, three, five, and seven-eighths points. The smallest marks represent the sixteenths fractions of an inch.

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What is the square root of zero?

The square root of a number is a number that is smaller or equal to the original number that can yield the original number if multiplied by itself. For example, the square root of 9 is 3, and 3 multiplied by 3 equals 9. This check is called squaring a number, which is the opposite operation to taking the square root of a number.

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Do math functions of constant expressions get pre-calculated at compile time?

Runtime constants typically make use of values based on input to a function, but this is not necessarily the case. Many programming languages, including BASIC, Perl, Fortran and C++, allow for calculations to be done at compile-time. This is usually just an option available to the programmer and not the standard way the language handles functions of constant expressions.\nC++ is one language that offers particularly bountiful options for when constant expressions can be calculated. In C++, functions can be rewritten to run at either compile-time or runtime. Compile-time expressions can also be..

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What is the role of 0 as a placeholder in numbers?

Without placeholders, there would be no way to write numbers in shorthand notation, and also no way to tell them apart. For example, without 0 as a placeholder, the numbers 59, 5009 and 5090 cannot be written in short form.When 0 is used as a leading 0, it can safely be removed. For example, in the number 0509, the first 0 can be removed without changing the value of the number while the second 0 cannot because it is a placeholder.

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How do you construct a 135-degree angle?

Draw a line segmentUse the ruler to draw a line-segment. Label the line-segment with X and Y at its endpointsConstruct the 90-degree angleSet the compass to a convenient length. Place the point of the compass on point x and draw an arc that cuts through line-segment XY at a new point, P. Keep the point of the compass on point X and draw an arc above the line. Move the point of the compass to point P and draw an arc intersecting the first arc. Label the intersecting point as Z. Connect X to Z and extend the line to create a right angle.Extend line-segment XY to TUse the ruler to extend the line..

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What are some polygon names?

A polygon is a closed connection of line segments. Each line segment is called a side. The number of sides is the key piece of information in determining the name of the polygon.\nIf there are more than five line segments, the name of the polygon comes from the Greek word for the number of sides, followed by "-gon." A polygon with five sides is called a pentagon, and a polygon with six sides is called a hexagon. Similarly, a polygon with seven sides is called a heptagon or septagon, and a polygon with eight sides is called an octagon.\nHowever, the two most familiar polygons do not follow the ..

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What is the square root of 99?

The square root of a number A is another number B, such that B x B = A. B can be either positive or negative since -B x -B = A. The square root of 99 is re-written as 3 times the square root of 11 by factoring 99 as 9 x 11. The square root of 9 x 11 is the square root of 9 times the square root of 11. The square root of 9 is 3, and thus, the final answer is 3 times the square root of 11.

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How do you write a mixed number?

Mixed numbers can be used to express any amount greater than one that is not a whole number. For example, the fraction 5/3 can be represented as the mixed number 1 2/3 because five thirds is equal to one and two thirds. Similarly, the fraction 91/2 can be represented as the mixed number 45 1/2.

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