30 Videos for "vertex angle"

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.