How to solve proportions.
How to solve a simple proportion.
How to write ratios to compare two quantities.
Understanding the laws of definite and multiple proportions.
How to identify if two solids are similar and how to convert 1D ratios to surface area and volume ratios.
How to convert between length and area ratios of similar polygons
How to relate the sides of an angle bisected and the lengths of the opposite side.
How to define the sine ratio and identify the sine of an angle in a right triangle.
How to define the cosine ratio and identify the cosine of an angle in a right triangle.
How to define the tangent ratio and identify the tangent of an angle in a right triangle.
Definitions and notation of ratios, and when we use them
How to prove two triangles are similar using a line parallel to a base.