How to define the tangent ratio and identify the tangent of an angle in a right triangle.
How to identify a segment from the vertex angle in an isosceles triangle to 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 function for all angles.
How to define isosceles triangles, their components and how to determine their properties.
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.
How to write ratios to compare two quantities.
How to classify a triangle based on its side lengths and angle measures.
How to use inverse trig functions to find angles in right triangles.
How to define a tangent line; how to determine the angle a radius to a tangent forms.