Angle Bisectors and Incircle
Learn how to construct angle bisectors using a compass, and use them to draw a triangle’s incircle. Let’s get started! 🚀
Video Lesson
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Flashcards
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🛎️ What Is an Angle Bisector?
- An angle bisector splits an angle into two equal parts.
- Each new angle is exactly half of the original angle.
🛎️ How to Draw an Angle Bisector?
- You can draw an angle bisector using a protractor by halving the angle.
- You can also use a compass to draw the bisector without measuring.
🛎️ The Key Property of an Angle Bisector
- Any point on an angle bisector is equidistant from both sides of the angle.
- This means the perpendicular distance to each side is the same.
🛎️ Incentre and Incircle
- The incentre is where the three angle bisectors of a triangle meet.
- The incircle is the largest circle that fits inside the triangle and touches all three sides.
Practice Questions
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Interactive Activity
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