47 Videos for "area of a triangle"

Solving Formulas  Concept
Math › Geometry › Area
How to strategize about solving formulas for variables; how to solve the area of a rectangle formula for base and height; how to solve the area of a triangle formula for base and for height. 
Area of Regular Polygons  Concept
Math › Geometry › Area
How to derive the formula to calculate the area of a regular polygon. 
Area of Regular Polygons  Problem 1
Math › Geometry › Area
How to calculate the area of a regular polygon, given the length of the apothem and side length. 
Area of Regular Polygons  Problem 3
Math › Geometry › Area
How to calculate the perimeter of a regular polygon given the area and apothem length. 
Area of Regular Polygons  Problem 2
Math › Geometry › Area
How to find the length of an apothem in a regular polygon given the area and side length. 
Area of Regular Polygons  Problem 4
Math › Geometry › Area
How to find the area of a regular hexagon given only the length of the apothem. 
Area of Trapezoids  Problem 1
Math › Geometry › Area
How to find the length of a base in a triangle where the area, other base, and height are known. 
454590 Triangles  Problem 4
Math › Geometry › Pythagorean Theorem
How to calculate the area of a 454590 triangle given only the length of the hypotenuse. 
454590 Triangles  Problem 4
Math › Trigonometry › Pythagorean Theorem
How to calculate the area of a 454590 triangle given only the length of the hypotenuse. 
Area With the Cross Product  Problem 3
Math › Precalculus › Systems of Linear Equations and Matrices
How to compute the area of a triangle in xyzspace using vectors formed from two of its sides. 
Similarity and Area Ratios  Problem 3
Math › Geometry › Similarity
How to find the area of similar triangles given one side length and one area. 
Area With Determinants  Problem 3
Math › Precalculus › Systems of Linear Equations and Matrices
How to compute the area of an irregular quadrilateral using determinants. 
Solving Formulas  Problem 2
Math › Geometry › Area
How to solve the area of a sector formula for the radius. 
Solving Formulas  Problem 3
Math › Geometry › Area
How to solve the area of a regular polygon formula for the side length. 
Solving Formulas  Problem 1
Math › Geometry › Area
How to solve for one of the bases of a trapezoid in the trapezoid area formula. 
Pythagorean Theorem Proofs  Concept
Math › Trigonometry › Pythagorean Theorem
How to prove the Pythagorean Theorem using Algebra to show the area of the smaller square plus the area of four triangles is equal to the area of the larger square. 
Pythagorean Theorem Proofs  Concept
Math › Geometry › Pythagorean Theorem
How to prove the Pythagorean Theorem using Algebra to show the area of the smaller square plus the area of four triangles is equal to the area of the larger square. 
Center and Apothem of Regular Polygons  Concept
Math › Geometry › Area
How to define the apothem and center of a polygon; how to divide a regular polygon into congruent triangles. 
Pythagorean Theorem Proofs  Problem 1
Math › Trigonometry › Pythagorean Theorem
How to prove the Pythagorean Theorem by rearranging triangles inside a square. 
Pythagorean Theorem Proofs  Problem 1
Math › Geometry › Pythagorean Theorem
How to prove the Pythagorean Theorem by rearranging triangles inside a square.