Video Course Library

High School Geometry lesson to prove theorems about perpendicular lines. Key topics include distance from a point to a line.

High School Geometry lesson to apply triangle sum properties. Key topics include interior angles, exterior angles, corollary to a theorem, and triangles - scalene, isosceles, equilateral, acute, right, obtuse, equiangular.

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High School Geometry lesson to apply triangle sum properties. Key topics include interior angles, exterior angles, corollary to a theorem, and triangles - scalene, isosceles, equilateral, acute, right, obtuse, equiangular.

High School Geometry lesson to apply triangle sum properties. Key topics include interior angles, exterior angles, corollary to a theorem, and triangles - scalene, isosceles, equilateral, acute, right, obtuse, equiangular.

High School Geometry lesson to prove triangles congruent by SAS and HL. Key topics include leg of a right triangle and hypotenuse.