36 Videos for "proportions"

Similarity Shortcuts  Concept
Math › Geometry › Similarity
How to determine if two triangles are similar using a shortcut. 
Secants  Problem 2
Math › Geometry › Circles
How to find angle and arc measures formed by intersecting secants and tangents. 
Percents  Problem 1
Math › Algebra › PreAlgebra
How to solve "What is x percent of?" 
Similarity Shortcuts  Problem 2
Math › Geometry › Similarity
How to find a missing side of a triangle using the SAS similarity shortcut. 
Indirect Variation  Problem 1
Math › Algebra 2 › Functions
How to solve an indirect variation problem using variables. 
Secants  Problem 4
Math › Geometry › Circles
How to fin the length of secant segments drawn from points outside a circle. 
Similarity Shortcuts  Problem 3
Math › Geometry › Similarity
How to determine if two triangles are similar using a shortcut. 
Solving a Rational Equation  Problem 5
Math › Algebra 2 › Rational Expressions and Functions
Turning sums and differences into proportions to enable cross multiplication. 
Angle Bisectors and Opposite Side Ratios  Concept
Math › Geometry › Similarity
How to relate the sides of an angle bisected and the lengths of the opposite side. 
Proportional Segments Between Parallel Lines  Concept
Math › Geometry › Similarity
How to prove two triangles are similar using a line parallel to a base. 
Proportional Segments Between Parallel Lines  Problem 1
Math › Geometry › Similarity
How to find a missing length in a triangle cut by a line parallel to a base. 
Proportional Segments Between Parallel Lines  Problem 2
Math › Geometry › Similarity
How to find missing lengths created by two parallel lines passing through a triangle. 
Angle Bisectors and Opposite Side Ratios  Problem 2
Math › Geometry › Similarity
How to find a missing length, given the length of the opposite side in a triangle. 
Solving Rational Equations with Unlike Denominators  Problem 1
Math › Algebra › Rational Expressions and Functions
How to solve rational equations that are proportions. 
Math Content Review I
Test Prep › ACT › ACT Math
Short, helpful video on ACT prealgebra by top ACT prep instructor, Devorah. Videos are produced by leading online education provider, Brightstorm. 
Finding the Slope of a Line from 2 Points  Problem 2
Math › Algebra › Linear Equations and Their Graphs
How to find the slope if you're given 2 points, but one contains a missing value.