355 Videos for "angles"

Angle of Elevation and Depression  Concept
Math › Precalculus › Basic Trigonometry
How to define an angle of elevation or an angle of depression. 
Angle of Elevation and Depression  Concept
Math › Geometry › Basic Trigonometry
How to define an angle of elevation or an angle of depression. 
Vertical Angles  Problem 2
Math › Geometry › Reasoning, Diagonals, Angles and Parallel Lines
How to solve for a variable used to measure vertical angles. 
Angles: Types and Labeling  Problem 1
Math › Geometry › Geometry Building Blocks
How to define congruent angles and how to label adjacent angles. 
Supplementary and Complementary Angles  Problem 1
Math › Geometry › Geometry Building Blocks
How to use angle measures to identify supplementary and complementary angles. 
Alternate Exterior Angles  Problem 2
Math › Geometry › Reasoning, Diagonals, Angles and Parallel Lines
How to find angles in terms of variables that are AEA. 
Vertical Angles  Problem 3
Math › Geometry › Reasoning, Diagonals, Angles and Parallel Lines
How to determine the measure of vertical angles that are supplementary. 
Exterior Angles of a Polygon  Concept
Math › Geometry › Polygons
How to find the sum of the exterior angles in a polygon and find the measure of one exterior angle in an equiangular polygon. 
The HalfAngle Identities  Problem 3
Math › Precalculus › Advanced Trigonometry
How to use the doubleangle formulas for sine and cosine to derive a halfangle formula for tangent. 
The HalfAngle Identities  Problem 3
Math › Trigonometry › Advanced Trigonometry
How to use the doubleangle formulas for sine and cosine to derive a halfangle formula for tangent. 
Inscribed Angles  Concept
Math › Geometry › Circles
How to calculate the measure of an inscribed angle. 
Exterior Angles of a Polygon  Problem 2
Math › Geometry › Polygons
How to find a missing exterior angle of a pentagon, given four other angles. 
Angles in Semicircles and Chords to Tangents  Concept
Math › Geometry › Circles
How to prove that an angle inscribed in a semicircle is a right angle; how to solve for arcs and angles formed by a chord drawn to a point of tangency. 
Same Side Interior and Same Side Exterior Angles  Concept
Math › Geometry › Reasoning, Diagonals, Angles and Parallel Lines
How to describe same side interior and same side exterior angles and their special properties. 
Inscribed Angles  Problem 1
Math › Geometry › Circles
How to find the measure of an inscribed angle and a missing arc. 
Angle Bisectors  Concept
Math › Geometry › Geometry Building Blocks
How to label an angle bisector; how to use an angle bisector to find a missing variable. 
Exterior Angles of a Polygon  Problem 1
Math › Geometry › Polygons
How to find the measures of the three exterior angles of a triangle in terms of a variable. 
Inscribed Angles  Problem 3
Math › Geometry › Circles
How to find the measure of inscribed angles that have congruent intercepted arcs. 
Triangle Angle Sum  Problem 1
Math › Geometry › Triangles
How to apply the triangle angle sum theorem when you need to find missing angles. 
Supplementary and Complementary Angles  Concept
Math › Geometry › Geometry Building Blocks
How to identify supplementary and complementary angles.