Curated Video
Types of Triangles
This video will explain the four types of triangles and their properties: right-angled, equilateral, isosceles and scalene triangles. Practice questions are at the end of the video.
Curated Video
Basic Angle Rules
Angle Rules: This video explains the basic angle rules which are extremely helpful to know when solving geometry problems. Rules covered are: angles in a triangle, angles in a quadrilateral, angles on a straight line, angles around a...
Curated Video
GCSE Maths - Types of Triangle #100
This video covers the properties you need to know about the 4 types of triangles, namely equilateral triangles, isosceles triangles, right-angle triangles and scalene triangles. This video is suitable for maths courses around the world....
Curated Video
GCSE Maths - 5 Angle Rules to Know #116
This video covers the 5 most basic angle rules and then goes through a sample exam questions. The angle rules we cover are: - Angles in a triangle add to 180° - Angles on a straight line add to 180°, - Angles in a quadrilateral add to...
Khan Academy
The Angle Game, Angles and Intersecting Lines, Geometry
A motivating activity is coupled with the use of algebra to explore the process of identifying the value of an angle. It feels like magic when Sal shows the solution to the final problem. Also, it would be worthwhile to consider using...
Khan Academy
The Angle Game, Angles and Intersecting Lines, Geometry
A motivating activity is coupled with the use of algebra to explore the process of identifying the value of an angle. It feels like magic when Sal shows the solution to the final problem. Also, it would be worthwhile to consider using...