Скачать или смотреть Circle Theorems: Angles Subtended by the Same Arc are Equal 📐 | Maths Tutorial

Welcome back to my series on Circle Theorems! Now that you know the basic components of a circle, it is time to tackle our first major rule: Angles subtended by the same arc (or chord) at the circumference are equal.

Often referred to as the 'bowtie' or 'butterfly' theorem because of how the shapes look inside the circle, this rule is a favourite in geometry exams. In this tutorial, I will show you exactly how to spot this theorem in complex diagrams and how to use it to find missing angles with confidence.

📌 In this video, I will cover:

1. What it means for an angle to be 'subtended' by an arc or a chord.

2. Visual examples of the theorem in action.

This lesson is perfect for students preparing for their Cambridge IGCSE, O Level, and ZIMSEC maths examinations. Make sure you have your geometry set and a notepad ready, and let's practise!

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