• #### Area of Kites and Rhombuses - Concept

##### Math›Geometry›Area
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.
• #### Area of Kites and Rhombuses - Problem 1

##### Math›Geometry›Area
How to calculate the area of a kite given the lengths of the four sides and the diagonals.
• #### 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.
• #### Isosceles Triangles - Concept

##### Math›Geometry›Triangles
How to define isosceles triangles, their components and how to determine their properties.
• #### 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.
• #### Trigonometric Ratios: Sine - Problem 2

##### Math›Geometry›Basic Trigonometry
How to find the length of a base in an isosceles triangle given the vertex angle and a leg length.
• #### Trigonometric Ratios: Sine - Problem 2

##### Math›Trigonometry›Basic Trigonometry
How to find the length of a base in an isosceles triangle given the vertex angle and a leg length.
• #### Trigonometric Ratios: Sine - Problem 2

##### Math›Precalculus›Basic Trigonometry
How to find the length of a base in an isosceles triangle given the vertex angle and a leg length.
• #### Polygons - Problem 2

##### Math›Geometry›Geometry Building Blocks
How to identify corresponding sides and angles of congruent polygons.