proportion 18 videos
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Proportions
Algebra Solving Equations
How to solve proportions.
ratio proportion fraction cross multiply -
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Law of Definite Proportions - Law of Multiple Proportions
Chemistry Matter
Understanding the laws of definite and multiple proportions.
law of definite proportions law of multiple proportions matter dalton's law compounds -
Law of Definite Proportions - Law of Multiple Proportions
Physics The Atom and Quantum Physics
Understanding the laws of definite and multiple proportions.
law of definite proportions law of multiple proportions matter dalton's law compounds -
Proportional Segments Between Parallel Lines
Geometry Similarity
How to prove two triangles are similar using a line parallel to a base.
parallel lines triangles similar triangles proportion -
Percents
Algebra Pre-Algebra
How to set up percent problems as proportions.
percent cross multiply proportion -
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Similar Triangles
Pre-Algebra Introductory Geometry
Overview of similarity: congruent angles, proportional corresponding sides
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Direct Variation
Algebra 2 Functions
How to define direct variation.
direct variation proportional constant of variation -
Similarity Shortcuts
Geometry Similarity
How to determine if two triangles are similar using a shortcut.
similar triangles AA SAS SSS proportion congruence -
Corresponding Parts of Similar Triangles
Geometry Similarity
How to relate corresponding altitudes, medians and angle bisectors in similar triangles.
similar triangles altitude median angle bisector proportional -
Angle Bisectors and Opposite Side Ratios
Geometry Similarity
How to relate the sides of an angle bisected and the lengths of the opposite side.
angle bisector opposite side ratio proportion -
Indirect Variation
Algebra 2 Functions
How to define indirect variation.
indirect variation inverse proportion constant of variation -
Constructing the Centroid
Geometry Constructions
How to identify the centroid and the way it divides each of the medians.
point of concurrency center of mass center of gravity centroid proportional segments construct -
Secants
Geometry Circles
How to define a secant; how to find the length of various secants in circles.
secant intercepted arcs proportion arc measure tangent chord -
Properties of Similar Polygons
Geometry Similarity
How to identify if two figures are similar.
similar figures corresponding angles congruence corresponding sides proportional -
ACT Pre-Algebra
ACT ACT Math
Short, helpful video on ACT prealgebra by top ACT prep instructor, Devorah. Videos are produced by leading online education provider, Brightstorm.
Pre algebra order of operations percents proportions ratios mean median mode
