Review Basics: Special Triangles (02:02)
Review triangle classifications; CPCTC; the SAS, SSS, and ASA postulates; the angle-angle-side theorem; and the hypotenuse-leg theorem.
Isosceles & Right Triangle Theorems (06:53)
Learn the components of isosceles and right triangles. See proofs for congruent angles and sides of an isosceles triangle. Learn the angle-angle-side and hypotenuse leg theorem.
General Definitions (03:42)
A polygon is a simple, closed, multi-sided figure that has line segments. Other definitions include: convex region, concave region, diagonal, and regular polygons. Determine the sum of the measures of the angles inside a shape.
Quadrilaterals & Their Secret Information (04:35)
Review the definition of a quadrilateral and the five categories. Learn key theorems of parallelograms.
Similarities Between Triangles (03:12)
Polygons are similar when they are proportionately the same size. See examples of triangles with congruent angles, proportional sides, and differing size.
Proving the Similarity Of Triangles (02:51)
Learn three properties to prove two triangles are similar: the angle-angle similarity postulate, the side-angle-side similarity theorem, and the side-side-side similarity theorem.
Credits: Special Triangles (01:07)
Credits: Special Triangles
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