# ratio proportion   47 videos

• #### Proportions

##### AlgebraSolving Equations

How to solve proportions.

ratio proportion fraction cross multiply
• #### Solving Proportions

##### GeometrySimilarity

How to solve a simple proportion.

ratio proportion
• #### Ratios

##### AlgebraSolving Equations

How to write ratios to compare two quantities.

ratio fraction
• #### Law of Definite Proportions - Law of Multiple Proportions

##### PhysicsThe 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
• #### Law of Definite Proportions - Law of Multiple Proportions

##### ChemistryMatter

Understanding the laws of definite and multiple proportions.

law of definite proportions law of multiple proportions matter dalton's law compounds
• #### Similarity and Volume Ratios

##### GeometrySimilarity

How to identify if two solids are similar and how to convert 1D ratios to surface area and volume ratios.

similarity volume ratios surface area
• #### Similarity and Area Ratios

##### GeometrySimilarity

How to convert between length and area ratios of similar polygons

polygons similar area ratios

• #### Angle Bisectors and Opposite Side Ratios

##### GeometrySimilarity

How to relate the sides of an angle bisected and the lengths of the opposite side.

angle bisector opposite side ratio proportion
• #### Trigonometric Ratios: Sine

##### GeometryBasic Trigonometry

How to define the sine ratio and identify the sine of an angle in a right triangle.

trigonometry ratio right triangle sine SOH CAH TOA
• #### Trigonometric Ratios: Cosine

##### GeometryBasic Trigonometry

How to define the cosine ratio and identify the cosine of an angle in a right triangle.

trigonometry ratio right triangle sine SOH CAH TOA
• #### Trigonometric Ratios: Tangent

##### GeometryBasic Trigonometry

How to define the tangent ratio and identify the tangent of an angle in a right triangle.

trigonometry ratio right triangle sine SOH CAH TOA
• #### Trigonometric Ratios: Sine

##### TrigonometryBasic Trigonometry

How to define the sine ratio and identify the sine of an angle in a right triangle.

trigonometry ratio right triangle sine SOH CAH TOA
• #### Trigonometric Ratios: Cosine

##### TrigonometryBasic Trigonometry

How to define the cosine ratio and identify the cosine of an angle in a right triangle.

trigonometry ratio right triangle sine SOH CAH TOA
• #### Trigonometric Ratios: Tangent

##### TrigonometryBasic Trigonometry

How to define the tangent ratio and identify the tangent of an angle in a right triangle.

trigonometry ratio right triangle sine SOH CAH TOA
• #### Trigonometric Ratios: Sine

##### PrecalculusBasic Trigonometry

How to define the sine ratio and identify the sine of an angle in a right triangle.

trigonometry ratio right triangle sine SOH CAH TOA
• #### Trigonometric Ratios: Cosine

##### PrecalculusBasic Trigonometry

How to define the cosine ratio and identify the cosine of an angle in a right triangle.

trigonometry ratio right triangle sine SOH CAH TOA
• #### Trigonometric Ratios: Tangent

##### PrecalculusBasic Trigonometry

How to define the tangent ratio and identify the tangent of an angle in a right triangle.

trigonometry ratio right triangle sine SOH CAH TOA
• #### Ratios and unites

##### Pre-AlgebraFractions and MIxed Numbers

Definitions and notation of ratios, and when we use them

• #### Proportional Segments Between Parallel Lines

##### GeometrySimilarity

How to prove two triangles are similar using a line parallel to a base.

parallel lines triangles similar triangles proportion