359 Videos for "angles"

Converse of Parallel Lines Theorem  Problem 1
Math › Geometry › Reasoning, Diagonals, Angles and Parallel Lines
How to solve for a variable to make lines parallel. 
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 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. 
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. 
Isosceles Triangles  Problem 2
Math › Geometry › Triangles
How to solve for the measure of the vertex angle of an isosceles triangle given an exterior angle. 
ASA and AAS  Problem 2
Math › Geometry › Triangles
How to use ASA and AAS and properties of angles formed by a transversal of parallel lines to determine the congruence of vertical triangles and denote the congruence correctly. 
Isosceles Triangles  Problem 3
Math › Geometry › Triangles
How to solve for a variable used to measure the angles of an isosceles triangle. 
Isosceles Triangles  Problem 1
Math › Geometry › Triangles
How to solve for the side length and base angle measures of an isosceles triangle. 
Parallelogram Properties  Problem 1
Math › Geometry › Polygons
How to solve for variables when given the angles of a parallelogram in terms of those variables. 
Cyclic Quadrilaterals and Parallel Lines in Circles  Problem 1
Math › Geometry › Circles
How to calculate angles in a cyclic quadrilateral given arc measures and two angle measures. 
Trapezoid Properties  Problem 1
Math › Geometry › Polygons
How to find the measure of all of the angles in an isosceles trapezoid, given one of the upper angles. 
Trapezoid Properties  Problem 2
Math › Geometry › Polygons
How to find all the angles in an isosceles trapezoid, given one angle. 
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 2
Math › Geometry › Polygons
How to find the vertex and nonvertex angles in a kite. 
Kite Properties  Problem 1
Math › Geometry › Polygons
How to find the angles created by the two diagonals in a kite. 
The Definitions of Sine and Cosine  Problem 1
Math › Precalculus › Trigonometric Functions
How to evaluate sine and cosine when the angle is 0, pi/2, pi, 3*pi/2. 
The Definitions of Sine and Cosine  Problem 1
Math › Trigonometry › Trigonometric Functions
How to evaluate sine and cosine when the angle is 0, pi/2, pi, 3*pi/2. 
Similar Triangles in Circles and Right Triangles  Problem 2
Math › Geometry › Similarity
How to find missing side lengths in a right triangle with an altitude drawn from the right angle.