# sum of an arithmetic sequence   6 videos

• #### Triangle Angle Sum

##### GeometryTriangles

How to apply the triangle angle sum theorem.

triangle angle sum theorem 180 degrees
• #### Polygon Angle Sum

##### GeometryPolygons

How to derive the formula to find the sum of angles in any polygon.

triangle angle sum diagonal polygon
• #### Equiangular Polygon Sums

##### GeometryPolygons

How to find the measure of one angle in any equiangular or regular polygon.

equiangular regular congruent triangles sum
• #### Inductive Reasoning

##### GeometryReasoning, Diagonals, Angles and Parallel Lines

How to define inductive reasoning, and how to find numbers in a sequence.

inductive reasoning deductive reasoning patterns Fibonacci sequence.
• #### Exterior Angles of a Polygon

##### GeometryPolygons

How to find the sum of the exterior angles in a polygon and find the measure of one exterior angle in an equiangular polygon.

exterior angle sum of angles equiangular polygon
• #### Supplementary and Complementary Angles

##### GeometryGeometry Building Blocks

How to identify supplementary and complementary angles.

angles sum right angle
© 2021 Brightstorm, Inc. All Rights Reserved.