maths

• An integer is any whole number, including zero.
• A prime number is a whole number greater than one that has no positive divisors other than one and itself.
• The product of two numbers is the result when they are multiplied together.
• A rational number is a fraction or decimal that can be expressed as an exact fraction (e.g., 1/2).
• An irrational number cannot be expressed as a fraction or decimal with a finite number of digits (e.g., pi = 3.14...).
• The quotient of two numbers is the result when the first number is divided by the second number.
• To find the remainder when dividing one number by another, divide the larger number into the smaller number as many times as possible without going over, then write down what's left over at the end.
• The real numbers include all integers, fractions, decimals, and irrationals.
• When multiplying or dividing fractions with different denominators, it may be necessary to change them so that they have the same denominator.
• A square root is a number whose value squared equals another number.
• A real number is a number on the number line, including integers, fractions, decimals, and irrational numbers like pi.
• A real number is any number on the number line, whether it's rational or irrational.
• A factorial is the product of all positive integers less than or equal to a given number.
• A complex number is a combination of a real part and an imaginary part, represented by a + bi where i represents the square root of -1.
• A factorial is denoted by ! and represents the product of all positive integers less than or equal to the given number (e.g., 5! = 5 x 4 x 3 x 2 x 1)
• the space between two intersection of lines is called an angle
• an angle which is smaller than 90 degrees is called an acute angle
• an angle which is 90 degrees is called a right angle
• an angle between 90 and 180 degrees is called an obtuse angle
• an angle between 180 and 360 degree is called a reflex angle
• a point where two or more line segments meet is called a vertex
• when two lines are perpendicular they are at an angle of 90 to another line or surface
• angles that are complementary add up to 90 degrees
• angles that are supplementary add up to 180 degrees
• centers: comparison of the median values
• spread: the range of values the data takes
• outliers: refers to data that are usually high or low values that don't fit with the rest of the data
• shape: refers to the dot plots. may be unimodal, bimodal, symmetrical, asymmetrical or skewed to the left or right
• Pythagoras: a special relationship exsits in right angle triangles: h2 = a2 + b2
• h is the hypothemus (the longer side, always opposite the 90 degree angle)