104 Videos for "sum"

Triangle Angle Sum  Concept
Math › Geometry › Triangles
How to apply the triangle angle sum theorem. 
Polygon Angle Sum  Concept
Math › Geometry › Polygons
How to derive the formula to find the sum of angles in any polygon. 
Triangle Angle Sum  Problem 1
Math › Geometry › Triangles
How to apply the triangle angle sum theorem when you need to find missing angles. 
Polygon Angle Sum  Problem 1
Math › Geometry › Polygons
How to find the sum of the angles when you know the number of sides of a polygon. 
Polygon Angle Sum  Problem 2
Math › Geometry › Polygons
How to find the number of sides of a polygon when you know the sum of its angles. 
Factoring the Sum or Difference of Cubes  Concept
Math › Algebra 2 › Factoring
How to factor the sum or difference of cubes. 
Triangle Angle Sum  Problem 2
Math › Geometry › Triangles
How to apply the triangle angle sum theorem when you need to solve for x. 
Polygon Angle Sum  Problem 3
Math › Geometry › Polygons
How to apply the polygon angle sum theorem when you need to solve for x. 
Equiangular Polygon Sums  Problem 1
Math › Geometry › Polygons
How to find the measure of one angle in a regular nonagon. 
Equiangular Polygon Sums  Concept
Math › Geometry › Polygons
How to find the measure of one angle in any equiangular or regular polygon. 
Equiangular Polygon Sums  Problem 3
Math › Geometry › Polygons
How to find the measure of angles in regular polygons that share sides. 
Equiangular Polygon Sums  Problem 2
Math › Geometry › Polygons
How to find the number of sides in an equiangular polygon given the measure of one angle. 
Sum of Digits  Concept
Math › Algebra › Word Problems Using Systems of Equations
How to solve a problem when asked to switch the digits of a 2digit number. 
Factoring the Sum or Difference of Cubes  Problem 1
Math › Algebra 2 › Factoring
How to factor the difference of cubes. 
Factoring the Sum or Difference of Cubes  Problem 3
Math › Algebra 2 › Factoring
How to factor the difference of cubes by substitution. 
Factoring the Sum or Difference of Cubes  Problem 2
Math › Algebra 2 › Factoring
How to factor the difference of cubes by substitution. 
Sum of Digits  Problem 1
Math › Algebra › Word Problems Using Systems of Equations
How to solve a problem when asked to switch the digits of a 2digit number and the result is more than the original. 
Sum of Digits  Problem 2
Math › Algebra › Word Problems Using Systems of Equations
How to solve a problem when asked to switch the digits of a 2digit number and one digit is zero. 
Geometric Series  Concept
Math › Precalculus › Sequences and Series
How to find the sum of a geometric series.