ratios triangles   100 videos

• Ratios

AlgebraSolving Equations

How to write ratios to compare two quantities.

ratio fraction
• 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
• 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
• Area of Triangles

GeometryArea

How to derive the area of a triangle formula using the rectangle area formula.

area triangles rectangles altitude
• Types of Triangles

GeometryGeometry Building Blocks

How to classify a triangle based on its side lengths and angle measures.

equiangular equilateral isosceles right acute obtuse triangles
• Ratios and unites

Pre-AlgebraFractions and MIxed Numbers

Definitions and notation of ratios, and when we use them

• Triangle Angle Sum

GeometryTriangles

How to apply the triangle angle sum theorem.

triangle angle sum theorem 180 degrees
• Similar Triangles in Circles and Right Triangles

GeometrySimilarity

How to determine if two triangles in a circle are similar and how to prove that three similar triangles exist in a right triangle with an altitude.

similar inscribed angles intercepted arc right angle circle
• Pascal's Triangle

PrecalculusTopics in Discrete Math

How to use Pascal's triangle.

zero product property factoring constant
• Pascal's Triangle

Algebra 2Polynomials

How to use Pascal's triangle.

zero product property factoring constant
• Using Sine to Calculate the Area of a Triangle

GeometryBasic Trigonometry

How to calculate the area of any triangle using two sides and an included angle.

area of a triangle sine