• 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.
• Proportions - Problem 5

Math›Algebra›Solving Equations
Shortcuts for using "mental math" to solve proportional relationships
Tags:
• Proportions - Problem 7

Math›Algebra›Solving Equations
Turning ratio notation with a colon into a fractional representation of a proportional word problem
Tags:
• Similar Triangles - Concept

Math›Pre-Algebra›Introductory Geometry
Overview of similarity: congruent angles, proportional corresponding sides
Tags:
• Direct Variation - Concept

Math›Algebra 2›Functions
How to define direct variation.
• Constructing the Centroid - Problem 1

Math›Geometry›Constructions
How to construct the centroid of a triangle.
• Properties of Similar Polygons - Concept

Math›Geometry›Similarity
How to identify if two figures are similar.
• Direct Variation - Problem 1

Math›Algebra 2›Functions
How to solve a direct variation problem using variables.
• Direct Variation - Problem 4

Math›Algebra›Linear Equations and Their Graphs
How to determine whether or not a relationship is direct variation or proportional
Tags:
• Constructing the Centroid - Concept

Math›Geometry›Constructions
How to identify the centroid and the way it divides each of the medians.
• Survey and sample methods - Problem 3

Math›Pre-Algebra›Introductory Statistics
Use a sample statistic and proportional reasoning to find a population parameter
Tags:
• Properties of Similar Polygons - Problem 2

Math›Geometry›Similarity
How to find missing sides of similar triangles that share a side.
• Corresponding Parts of Similar Triangles - Concept

Math›Geometry›Similarity
How to relate corresponding altitudes, medians and angle bisectors in similar triangles.
• Constructing the Centroid - Problem 2

Math›Geometry›Constructions
How to find missing lengths in a triangle where the three medians are drawn creating the centroid.
• Direct Variation - Problem 2

Math›Algebra 2›Functions
How to solve an applied direct variation problem.
• Properties of Similar Polygons - Problem 1

Math›Geometry›Similarity
How to identify if two quadrilaterals are similar, given three angles and four sides.