How to write ratios to compare two quantities.
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 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 relate the sides of an angle bisected and the lengths of the opposite side.
How to solve a simple proportion.
How to understand the idea of slope.
How to find the slope if you're given 2 points.
How to define the law of sines.
How to define and use the law of cosines.