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Brian McLogan
Determine the Value of X Using Third Angle Theorem and Congruent Triangles
👉 Learn how to solve for unknown variables in congruent triangles. Two or more triangles are said to be congruent if they have the same shape and size. When one of the values of a pair of congruent sides or angles is unknown and the...
Brian McLogan
What are complementary angles
👉 Learn how to define angle relationships. Knowledge of the relationships between angles can help in determining the value of a given angle. The various angle relationships include: vertical angles, adjacent angles, complementary angles,...
Brian McLogan
How to determine the angle of an inscribed angle of a tangent and secant line
Learn how to solve problems with secant lines. A secant line is a line that intersects a circle at exactly 2 points in contrast to a tangent line which is a line that touches a circle at exactly one point. When two secant lines...
Brian McLogan
How to determine two acute adjacent angles from a figure
👉 Learn how to define and classify different angles based on their characteristics and relationships are given a diagram. The different types of angles that we will discuss will be acute, obtuse, right, adjacent, vertical, supplementary,...
Brian McLogan
How do we classify the angles - Obtuse, straight, acute, right
Learn all about angles. An angle is a figure formed by two rays sharing a common endpoint. An angle can be classified as acute, right, obtuse, straight or refrex. An acute angle is an angle which measures less than 90 degrees. A right...
Brian McLogan
Determine the values of two angles that lie on a lie with a third angle
👉 Learn how to define and classify different angles based on their characteristics and relationships are given a diagram. The different types of angles that we will discuss will be acute, obtuse, right, adjacent, vertical, supplementary,...
Brian McLogan
A negative angle larger than one revolution to find the quadrant of the terminal side
👉 Learn how to determine the quadrant of an angle given in radians. Recall that 1 radian is the distance on the circumference of the circle that is equivalent to the radius of the circle. Also, recall that the circumference of a circle...
Brian McLogan
How to sketch a negative angle in degrees
👉 Learn how to sketch angles in terms of pi. An angle is the figure formed by two rays sharing the same endpoint. Angle is measured in radians or in degrees. One complete revolution about a point is equivalent to 2pi radians and 360...
Brian McLogan
Determining if two angles are supplementary
👉 Learn how to define and classify different angles based on their characteristics and relationships are given a diagram. The different types of angles that we will discuss will be acute, obtuse, right, adjacent, vertical, supplementary,...
Brian McLogan
What are adjacent angles
👉 Learn how to define angle relationships. Knowledge of the relationships between angles can help in determining the value of a given angle. The various angle relationships include: vertical angles, adjacent angles, complementary angles,...
Khan Academy
Khan Academy: Geometry: Problem Involving Angle Derived From Square and Circle
Demonstrates how to solve a challenging geometry problem about finding the measure of an angle that is formed by different segments in a square which intersect with part of a circle. Solution depends on creating triangles in the diagram...
Khan Academy
Khan Academy: Geometry: Angle Game (Part 2)
Solving for unknown angle measures using knowledge of different angle relationships and the triangle sum theorem. Continuation of Angle Game video. [9:49]
Khan Academy
Khan Academy: Geometry: The Angle Game
Solving for unknown angle measures using knowledge of different angle relationships and the triangle sum theorem. [9:01]
Khan Academy
Khan Academy: Geometry: Ca Geometry: Deducing Angle Measures
Demonstrates how to solve five different problems from a released California Geometry state test that involve finding the measures of angles in different polygons. This video also appears in the Geometry: Worked Examples section. [10:58]
Khan Academy
Khan Academy: Geometry: Measuring Angles in Degrees
Explains how to measure an angle in degrees using a protractor. Defines acute, right, and obtuse angles. Practice problems available. [8:22]
Khan Academy
Khan Academy: Find Measure of Angles Word Problem
Presents a problem where pie slices are measured in degrees and you must find the angle of your piece. [4:33]
Khan Academy
Khan Academy: Spirals, Fibonacci and Being a Plant: Angle a Trons
This video demonstrates how to fold paper into different angle measures for making doodles and angle puzzles.
Khan Academy
Khan Academy: Geometry: Finding More Angles
Solving for measures of the angles in a triangle using algebra, the triangle sum theorem, and properties of angles created by a transversal that cuts parallel lines. [6:05]
Khan Academy
Khan Academy: Angles: Using a Protractor
Shows how to use a protractor to measure an angle. Identifies different types of angles: acute, obtuse, right.
Khan Academy
Khan Academy: Decomposing Angles
Video lesson explains how to find the measure of an angle using addition. [3:04]
Khan Academy
Khan Academy: Missing Angles (Ca Geometry)
Worked examples deducing the measure of angles.
Sophia Learning
Sophia: Measurement of Angles in Degrees: Lesson 3
In this lesson, you'll learn about degrees and radians and their relationship with angles. It is 3 of 6 in the series titled "Measurement of Angles in Degrees."
Sophia Learning
Sophia: Measurement of Angles in Degrees: Lesson 5
In this lesson, you'll learn about degrees and radians and their relationship with angles. It is 5 of 6 in the series titled "Measurement of Angles in Degrees."