How the vocabulary word vertex applies to different objects in Geometry.
How to define adjacent angles.
How to define and identify vertical angles.
How to define a median in a triangle.
How to identify a segment from the vertex angle in an isosceles triangle to the opposite side.
How to label an angle and how to differentiate between acute, right, obtuse, and straight angles.
How to determine the number of diagonals in a polygon.
How to define circumscribed and inscribed circles and polygons relative to each other.
How to define and calculate a space diagonal.
How to identify a kite and its special properties.
How to derive the area formula of a kite based on the rectangle formula; how to calculate the area of a rectangle using diagonal lengths.
How to define a tangent line; how to determine the angle a radius to a tangent forms.
How to define a polygon, how to distinguish between concave and convex polygons, how to name polygons.
How to define an altitude and draw them on acute, right, and obtuse triangles.
How to define isosceles triangles, their components and how to determine their properties.
How to label the parts of a prism, how to distinguish between an oblique and a right prism.
How to prove that an angle inscribed in a semicircle is a right angle; how to solve for arcs and angles formed by a chord drawn to a point of tangency.