# E-Maths: Angle Properties of Circle Question

In this video, I discuss on the methods to answer angle properties of circle.

• 2 items to mark out before answering the question.
• How to identify angle at centre and its angle at circumference.
• Common perception mistake on cyclic quadrilateral.

Length of video = 6.35 minutes.

### Related Post

A-Maths: Plane Geometry Question (Step-by-Step) In this video, I will show you: How to prove that 2 lines are // to each other How to prove a pair of similar triangles How to prove an equati...
E-Maths: Introduction of Angle Properties of Circle (Basic) - Video This topic, Angle Properties of Circle is usually introduced in Secondary 3 Elementary Maths syllabus in Singapore.  It is a very visual topic in whic...
A-Maths: Find Equation of Circle Given Tangent & Circle + More           Many students after reading the question take a long time to begin as they don't know how to sta...
Video Solution Of Plane Geometry Question (Plus:Strategy To Handle Angles) This is the step by step video solution for this Plane Geometry question Inside this video, you will get to know how I begin this question with a ...

### Ai Ling Ong

Hi, I'm Ai Ling Ong. I enjoy coaching students who have challenges with understanding and scoring in 'O' Level A-Maths and E-Maths. I develop Math strategies, sometimes ridiculous ideas to help students in understanding abstract concepts the fast and memorable way. I write this blog to share with you the stuff I teach in my class, the common mistakes my students made, the 'way' to think, analyze... If you have found this blog post useful, please share it with your friends. I will really appreciate it! :)

### 2 Responses to E-Maths: Angle Properties of Circle Question

1. Eugene says:

Take 180 - 140 = 40 (angle on a str.line)
Angle z = 40 (angle in the same segment)