• #### Number of Diagonals in a Polygon - Concept

##### Math›Geometry›Reasoning, Diagonals, Angles and Parallel Lines
How to determine the number of diagonals in a polygon.
• #### Number of Diagonals in a Polygon - Problem 1

##### Math›Geometry›Reasoning, Diagonals, Angles and Parallel Lines
How to determine the number of diagonals in a polygon when you know the number of sides.
• #### Number of Diagonals in a Polygon - Problem 2

##### Math›Geometry›Reasoning, Diagonals, Angles and Parallel Lines
How to determine the number of sides in a polygon when you know the number of diagonals.
• #### Space Diagonals - Concept

##### Math›Trigonometry›Pythagorean Theorem
How to define and calculate a space diagonal.
• #### Space Diagonals - Concept

##### Math›Geometry›Pythagorean Theorem
How to define and calculate a space diagonal.
• #### Space Diagonals - Problem 2

##### Math›Geometry›Pythagorean Theorem
How to find the space diagonal of a rectangular prism using the Pythagorean Theorem.
• #### Space Diagonals - Problem 2

##### Math›Trigonometry›Pythagorean Theorem
How to find the space diagonal of a rectangular prism using the Pythagorean Theorem.
• #### Vertex and Diagonals - Concept

##### Math›Geometry›Geometry Building Blocks
How the vocabulary word vertex applies to different objects in Geometry.
• #### Space Diagonals - Problem 1

##### Math›Trigonometry›Pythagorean Theorem
How to find the length of the longest object that will fit inside a box.
• #### Space Diagonals - Problem 1

##### Math›Geometry›Pythagorean Theorem
How to find the length of the longest object that will fit inside a box.
• #### Number of Handshakes at a Party - Concept

##### Math›Geometry›Reasoning, Diagonals, Angles and Parallel Lines
How to determine the number of handshakes possible in a group of a certain number of people.
• #### Number of Handshakes at a Party - Problem 2

##### Math›Geometry›Reasoning, Diagonals, Angles and Parallel Lines
How to determine the number of people at a party when you know the number of handshakes possible.
• #### Number of Handshakes at a Party - Problem 1

##### Math›Geometry›Reasoning, Diagonals, Angles and Parallel Lines
How to determine the number of handshakes possible when you know the number of people at a party.

• #### Vertical Angles - Concept

##### Math›Geometry›Reasoning, Diagonals, Angles and Parallel Lines
How to define and identify vertical angles.

• #### Deductive Reasoning - Concept

##### Math›Geometry›Reasoning, Diagonals, Angles and Parallel Lines
How to define deductive reasoning and compare it to inductive reasoning.
• #### Vertical Angles - Problem 3

##### Math›Geometry›Reasoning, Diagonals, Angles and Parallel Lines
How to determine the measure of vertical angles that are supplementary.
• #### Inductive Reasoning - Concept

##### Math›Geometry›Reasoning, Diagonals, Angles and Parallel Lines
How to define inductive reasoning, and how to find numbers in a sequence.
• #### Corresponding Angles - Problem 2

##### Math›Geometry›Reasoning, Diagonals, Angles and Parallel Lines
How to find a missing angle using corresponding angles.