136 Videos for "length"

454590 Triangles  Problem 3
Math › Geometry › Pythagorean Theorem
How to find the perimeter of a square given the length of its diagonal using 454590 triangles. 
Factoring Trinomials, a is not 1  Problem 11
Math › Algebra › Factoring
A geometric interpretation of factoring trinoimals that uses a length times width equals area rectangular model. A "diamond puzzle" is used to find the rectangle's subareas. 
Using the Pythagorean Theorem to find a Missing Hypotenuse  Concept
Math › Geometry › Pythagorean Theorem
How to calculate the hypotenuse in a right triangle given the lengths of the legs using the Pythagorean Theorem. 
Using the Pythagorean Theorem to find a Missing Hypotenuse  Concept
Math › Trigonometry › Pythagorean Theorem
How to calculate the hypotenuse in a right triangle given the lengths of the legs using the Pythagorean Theorem. 
Using the Pythagorean Theorem to find a Missing Leg  Problem 1
Math › Geometry › Pythagorean Theorem
How to use the Pythagorean Theorem to find a missing leg, given the length of the hypotenuse and a leg. 
Introduction to the 3D Coordinate System  Problem 2
Math › Precalculus › Vectors and Parametric Equations
How to find the equation of a sphere with radius r when it is centered at the origin. 
Vector Operations in 3D  Concept
Math › Precalculus › Vectors and Parametric Equations
How to perform vector operations like addition, scalar multiplication, the dot product, and finding the magnitude, in three dimensions. 
Similar Triangles in Circles and Right Triangles  Problem 2
Math › Geometry › Similarity
How to find missing side lengths in a right triangle with an altitude drawn from the right angle. 
Using the Pythagorean Theorem to find a Missing Hypotenuse  Problem 1
Math › Geometry › Pythagorean Theorem
How to calculate the hypotenuse in a right triangle given the lengths of the legs using the Pythagorean Theorem. 
Converse of the Pythagorean Theorem  Problem 2
Math › Trigonometry › Pythagorean Theorem
How to use the Pythagorean Theorem to determine if a triangle is acute, right, or obtuse, given the lengths of the triangle. 
454590 Triangles  Problem 4
Math › Geometry › Pythagorean Theorem
How to calculate the area of a 454590 triangle given only the length of the hypotenuse. 
The Midpoint and Distance Formulas in 3D  Problem 3
Math › Precalculus › Vectors and Parametric Equations
How to find the equation of the set of points equidistant from two given points. 
Parametrizing a Line Segment  Problem 3
Math › Precalculus › Vectors and Parametric Equations
How to find a parametrization of segment AB that uses s, the distance from point A, as a parameter. 
454590 Triangles  Problem 4
Math › Trigonometry › Pythagorean Theorem
How to calculate the area of a 454590 triangle given only the length of the hypotenuse. 
Using the Pythagorean Theorem to find a Missing Leg  Problem 3
Math › Trigonometry › Pythagorean Theorem
How to use the Pythagorean Theorem to find the surface area of a prism given one of the face diagonals and the lengths of two edges. 
Using the Pythagorean Theorem to find a Missing Leg  Problem 3
Math › Geometry › Pythagorean Theorem
How to use the Pythagorean Theorem to find the surface area of a prism given one of the face diagonals and the lengths of two edges.