§2.3 Angle Bisector and Incircle

• Wiskunde
• Middelbare school
• vwo
• Leerjaar 2

C2 Distance and Area

Mr. Fintelman (FNL)

Monday October 21st

2024

Date	Monday October 21st 2024
Paragraph	§2.3 Angle Bisector and Incircle
Pages from the handbook	Pag. 63-67
Subject	Angle Bisector and Incircle

Today is the day...

I can already…

1. … draw angles to draw triangles. 

Prior Knowledge

After this lesson, I can...

1. … draw angle bisectors.
   
2. … draw the incircle of a triangle.
   

Goals

What is an angle bisector?

Drawing angle bisectors

1. Draw
2. Calculate half of 
3. Draw the bisector of

∠A=80°

∠A

80°

Drawing angle bisectors (Exercise 36)

1. Draw a random triangle ABC.
2. Draw the bisectors of ∠A and ∠B.
3. Also draw the bisector of ∠C. What do you notice?

Example:

Sketch your triangle

pag. -

Drawing the incircle of a triangle

Draw a circle in ABC with centre M and tangent to all sides.

Example:

Tekenen ingeschreven cirkel

Worktime

• You work neatly by…
  
• … reading the theory (again) before asking a question to your classmate.
  
• … raising a hand before asking a question to the teacher.
  
• … if the teacher is busy, remember your question and move on.

Help:

Exercises: 36, 37, 38 and 39.

Assignments:

Pages: 63-67

Exercises: 36, 37, 38 and 39.

Assignments from the planning of WEEK 1:

Extra:

Exercises: 40

Now I can...

1. … draw angle bisectors.
2. … draw the incircle of a triangle.
   

Reflection