68 Videos for "diagonals"

Rhombus Properties  Problem 1
Math › Geometry › Polygons
How to find the angles in a rhombus created by drawing one diagonal. 
Kite Properties  Problem 3
Math › Geometry › Polygons
How to find the angles in a kite created by the diagonals in terms of a variable. 
Kite Properties  Problem 1
Math › Geometry › Polygons
How to find the angles created by the two diagonals in a kite. 
Rectangle and Square Properties  Problem 2
Math › Geometry › Polygons
How to find the point of intersection of the diagonals of a rectangle in a coordinate plane. 
Parallelogram Properties  Problem 3
Math › Geometry › Polygons
How to find the lengths of the diagonals in a parallelogram if they are given in terms of a variable. 
Area of Kites and Rhombuses  Problem 3
Math › Geometry › Area
How to calculate the area of a rhombus given the length of half of the diagonals. 
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. 
454590 Triangles  Problem 3
Math › Trigonometry › Pythagorean Theorem
How to find the perimeter of a square given the length of its diagonal using 454590 triangles. 
454590 Triangles  Problem 3
Math › Geometry › Pythagorean Theorem
How to find the perimeter of a square given the length of its diagonal using 454590 triangles. 
Using the Pythagorean Theorem to find a Missing Hypotenuse  Problem 2
Math › Geometry › Pythagorean Theorem
How to calculate the length of a diagonal in a rectangle given its side lengths. 
Using the Pythagorean Theorem to find a Missing Hypotenuse  Problem 2
Math › Trigonometry › Pythagorean Theorem
How to calculate the length of a diagonal in a rectangle given its side lengths. 
Kite Properties  Concept
Math › Geometry › Polygons
How to identify a kite and its special properties. 
Rhombus Properties  Concept
Math › Geometry › Polygons
How to define a rhombus and compare it to a square and rectangle. 
Rectangle and Square Properties  Concept
Math › Geometry › Polygons
How to define a rectangle and a square. 
Polygon Angle Sum  Concept
Math › Geometry › Polygons
How to derive the formula to find the sum of angles in any polygon. 
Flowchart Proofs  Problem 1
Math › Geometry › Triangles
How to prove that two segments are congruent in a trapezoid with diagonals. 
Kite Properties  Problem 2
Math › Geometry › Polygons
How to find the vertex and nonvertex angles in a kite. 
Polygons  Concept
Math › Geometry › Geometry Building Blocks
How to define a polygon, how to distinguish between concave and convex polygons, how to name polygons. 
Polygon Angle Sum  Problem 1
Math › Geometry › Polygons
How to find the sum of the angles when you know the number of sides of a polygon.