Instructional Video0:53
Curated Video

Using Similar Triangles to Find an Unknown Angle | HS.G-SRT.B.5

9th - 12th
In this short video we will answer a standardized math test question using similar triangles to find a unknown angle. We will begin by reviewing the definition of similar figures. We will identify the corresponding angles and use the...
Instructional Video0:58
Curated Video

Using Similarity | HS.G-SRT.A.3

9th - 12th
In this shorts video we will answer a standardized math test question using similarity. We will begin by identifying key information given in the problem and by defining similar figures. We will use this definition to identify the...
Instructional Video1:19
Curated Video

Similar By Aa Criterion

9th - 11th
A video entitled "Similar by AA Criterion" which clarifies that if two pairs of corresponding angles are congruent, then the triangles are similar.
Instructional Video27:16
Curated Video

Corresponding angles

Pre-K - Higher Ed
Pupil outcome: I can recognise that a pair of parallel lines traversed by a straight line produces equal corresponding angles. Key learning points: - The different arrangements of 3 line segments can be described and categorised. - One...
Instructional Video28:39
Curated Video

Angles on parallel lines traversed by a straight line

Pre-K - Higher Ed
Pupil outcome: I can use facts about a pair of parallel lines traversed by a straight line. Key learning points: - Alternate, corresponding and co-interior angles can be identified in diagrams containing pairs of parallel lines. - Facts...
Instructional Video29:30
Curated Video

The sum of the interior angles of any triangle

Pre-K - Higher Ed
Pupil outcome: I can demonstrate and prove that in a triangle, the sum of the interior angles is 180°. Key learning points: - By considering a number of different triangles you can demonstrate facts about the angles in triangles. - The...
Instructional Video33:39
Curated Video

Checking and securing understanding on chains of reasoning with angle facts

Pre-K - Higher Ed
Pupil outcome: I can reason mathematically using my knowledge of angle facts. Key learning points: - Alternate, corresponding and co-interior angles can be identified in diagrams containing pairs of parallel lines. - Facts about angles...
Instructional Video32:18
Curated Video

Problem solving with polygons

Pre-K - Higher Ed
Pupil outcome: I can use my knowledge of polygons to solve problems. Key learning points: - Problems can be solved using parallel line angle facts. - Problems can be solved using interior and exterior angles of polygons. - Problems can...
Instructional Video35:00
Curated Video

Checking and securing understanding of advanced angle facts

Pre-K - Higher Ed
Pupil outcome: I can recognise equal corresponding angles, equal alternate angles and supplementary co-interior angles. Key learning points: - Corresponding angles are equal if they are on parallel lines and the same side of the...
Instructional Video35:40
Curated Video

Missing angles

Pre-K - Higher Ed
Pupil outcome: I can solve problems that require a combination of angles facts to identify values of missing angles, providing explanations of reasoning and logic used. Key learning points: - Missing angles can be found using parallel...
Instructional Video3:47
Curated Video

Angles in Parallel Lines

3rd - Higher Ed
This video explains angles in parallel lines, the rules for an angle formed by a transversal (line) crossing a pair of parallel lines: corresponding angles, alternate angles, corresponding angles, and allied angles. Practice questions...
Instructional Video5:11
Curated Video

GCSE Maths - Alternate, Corresponding and Allied Angles - Parallel Lines Angle Rules #117

9th - Higher Ed
This video covers the angle rules when you have a transversal crossing two parallel lines. After covering the basics we run through the alternate angles (z angles), corresponding angles (f angles) and allied angles (c angles)...
Instructional Video8:11
Curated Video

Angles of Triangles and Similarity

9th - 12th
In this video, the teacher reviews how to find angles in triangles using the triangle angle sum theorem. The teacher walks through four parts of a standardized math test question, showing step-by-step how to find missing angle...
Instructional Video12:25
Curated Video

Similar Figures, Angle-Angle Similarity and Indirect Measurement

9th - 12th
In this video lesson, we explore similar figures and indirect measurement in math. We learn about corresponding sides and angles, how to use similarity to solve problems, and even how to find the height of an object using indirect...
Instructional Video4:11
Brian McLogan

Learning to determine the number of sides of a regular polygon given one interior angle

12th - Higher Ed
👉 Learn how to determine the number of sides of a regular polygon. A polygon is a plane shape bounded by a finite chain of straight lines. A regular polygon is a polygon whose sides are congruent (equal). The interior angle of a polygon...
Instructional Video3:52
Brian McLogan

Solving for x Using Two Parallel Lines and a Transversal - Free Math Videos

12th - Higher Ed
👉 Learn how to solve for an unknown variable using parallel lines and a transversal theorems. Two lines are said to be parallel when they have the same slope and are drawn straight to each other such that they cannot meet. In geometry,...
Instructional Video3:38
Brian McLogan

Using a Triangle and Parallel Lines to Find the Value of Angles (mistake)

12th - Higher Ed
👉 Learn how to solve for an unknown variable using parallel lines and a transversal theorems. Two lines are said to be parallel when they have the same slope and are drawn straight to each other such that they cannot meet. In geometry,...
Instructional Video3:10
Brian McLogan

Using Consecutive Interior Angles to Prove Parallel Lines

12th - Higher Ed
👉 Learn how to prove parallel lines and relationship between parallel lines and transversals. You also learn how to find the missing value to show you that two angles are supplementary or equal to prove parallel lines. This is based off...
Instructional Video4:14
Brian McLogan

Finding the Value of x by Using Angle Relationships of Parallel Lines

12th - Higher Ed
👉 Learn how to solve for an unknown variable using parallel lines and a transversal theorems. Two lines are said to be parallel when they have the same slope and are drawn straight to each other such that they cannot meet. In geometry,...
Instructional Video2:57
Brian McLogan

Finding the Value of X and Y with Parallel Lines

12th - Higher Ed
👉 Learn how to solve for an unknown variable using parallel lines and a transversal theorems. Two lines are said to be parallel when they have the same slope and are drawn straight to each other such that they cannot meet. In geometry,...
Instructional Video0:44
Brian McLogan

Corresponding Angles Theorem with Parallel Lines

12th - Higher Ed
👉 Learn about parallel lines and a transversal theorems. Two lines are said to be parallel when they have the same slope and are drawn straight to each other such that they cannot meet. In geometry, parallel lines are identified by two...
Instructional Video6:02
Brian McLogan

Solving for X and Y Using Laws of Parallel Lines - Online Tutor - Free Math Videos

12th - Higher Ed
👉 Learn how to solve for an unknown variable using parallel lines and a transversal theorems. Two lines are said to be parallel when they have the same slope and are drawn straight to each other such that they cannot meet. In geometry,...
Instructional Video4:20
Brian McLogan

Lines and a Transversal - How To Label Special Angle Relationships

12th - Higher Ed
👉 Learn how to identify angles from a figure. This video explains how to solve problems using angle relationships between parallel lines and transversal. We'll determine the solution given, corresponding, alternate interior and exterior....
Instructional Video8:44
Brian McLogan

Master Labeling angles given parallel lines and a transversal

12th - Higher Ed
Master Labeling angles given parallel lines and a transversal