How to use the principle that corresponding parts of congruent triangles are congruent, or CPCTC.
How to identify, define and label a midpoint.
How to derive the area of a triangle formula using the rectangle area formula.
How to classify a triangle based on its side lengths and angle measures.
Overview of similarity: congruent angles, proportional corresponding sides
How to apply the triangle angle sum theorem.
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 use Pascal's triangle.
How to calculate the area of any triangle using two sides and an included angle.
How to identify a segment from the vertex angle in an isosceles triangle to the opposite side.
How to define a triangle midsegment and describe its special properties.
How to relate corresponding altitudes, medians and angle bisectors in similar triangles.
How is public policy made? Who controls the bureaucracy?
How to find the legs and hypotenuse in 30-60-90 triangles when given: the short leg, the long leg, or the hypotenuse.
How to define a midsegment in a triangle.
How to find the length of a leg or hypotenuse in a 45-45-90 triangle using the Pythagorean Theorem.