New interactive curriculum plans and website

# Unit Overview: Circle Theorems 1

## Lessons:

4 lessons

### Circle Theorems: Angle at the centre and angle at the circumference

In this lesson, we will learn that the angle at the centre of a circle is twice the angle at the circumference when subtended from the same arc. We will prove this result with a general case.

• 1 Quiz
• 6m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Circle Theorems: Angle in a semicircle is 90 degrees

In this lesson, we will learn that the angle in a semicircle is 90 degrees when the angle is subtended from the diameter. We will prove this result with a general case.

• 2 Quizzes
• 5m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Circle Theorems: Angles in the same segment

In this lesson, we will learn that angles in the same segment are equal when subtended from the same chord. We will prove this result with a general case.

• 2 Quizzes
• 5m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Circle Theorems: Angles in a cyclic quadrilateral

In this lesson, we will learn that opposite angles in a cyclic quadrilateral sum to 180 degrees. We will prove this result with a general case.

• 2 Quizzes
• 7m Video
• Presentation(PPT)
• Worksheet
• Transcript