How to identify a segment from the vertex angle in an isosceles triangle to the opposite side.
How to define isosceles triangles, their components and how to determine their properties.
How to classify a triangle based on its side lengths and angle measures.
How to identify a trapezoid and its special properties.
How the vocabulary word vertex applies to different objects in Geometry.
How to outline a flowchart proof.
How to strategize about solving a problem with trapezoidal arches.
How to define the apothem and center of a polygon; how to divide a regular polygon into congruent triangles.
How to derive the formula to calculate the area of a regular polygon.
How to find the length of a leg or hypotenuse in a 45-45-90 triangle using the Pythagorean Theorem.