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Brian McLogan
Using the properties of rectangles to solve for x
👉 Learn how to solve problems with rectangles. A rectangle is a parallelogram with each of the angles a right angle. Some of the properties of rectangles are: each pair of opposite sides are equal, each pair of opposite sides are...
Math Fortress
Geometry: Measurement of Angles (Level 5 of 9)
In this video we will continue going over slightly more challenging examples involving parts of a degree.
Curated Video
Exploring Similarity: Comparing Triangles with Congruent Angles
In this video, the teacher explains the concept of similarity in triangles by comparing congruent angles. They differentiate between congruent and similar figures, highlighting that similar figures have the same shape but not the same size.
Curated Video
Finding Missing Angle Measurements Using Complementary and Supplementary Angles
This video lesson teaches students how to find missing angle measurements by using complementary and supplementary angles. It explains the concepts of complementary angles (summing to 90 degrees) and supplementary angles (summing to 180...
Curated OER
How Do You Find Missing Angles in a Triangle With Variables?
Are you working on finding the missing angles of triangles in your class? Consider this video. An instructor uses the triangle sum theorem to create an equation that helps her find the missing angles. She explains each step and writes...
Curated OER
Common Angle Measures
Using a circle with clock like hands, the tutor explains common angle measurements. She shows that a full circular rotation equals 360 degrees, a quarter rotation equals 90 degrees, a three-quarters rotation equals 270 degrees, and a...
Curated OER
How Do You Find Missing Angles in a Triangle With Variables?
Are you working on finding the missing angles in triangles in your class? Consider this video. An instructor uses the triangle sum theorem to create an equation that helps her find the missing angles. She explains each step and writes...
Virtual Nerd
What are Interior and Exterior Angles of a Polygon?
Break down interior and exterior angles with this video. Using a pentagon, a teacher demonstrates how to find the interior and exterior angles of a polygon. She goes on to explain a few of the properties of these angles, writing down all...
Khan Academy
Khan Academy: Angles: Finding Missing Angles
Shows how to find the measure of missing angles based on the measure of a straight angle.
Virtual Nerd
Virtual Nerd: What Is the Sine Ratio?
The sine ratio is very useful when dealing with right triangles. This tutorial investigates what the sine ratio is and how to use it to find angle measurements in a right triangle. [6:49]