неділя, 26 квітня 2020 р.

6 Form PACE WORK 27/04/20


6 Form PACE WORK 27/04/20
Тема: П’ятикутник
In t                              
- What geometric figures do you know?
- Draw them.
1. Circle
2. Line
3. Rectangle
4. Triangle
5. Square

IV. Основна частина уроку.
4.1. Revision.

Is it a Pentagon?
A pentagon has 5 straight sides. The shape must also be closed (all the lines connect up):
A pentagon is a 5-sided Polygon (a flat shape with straight sides):
Regular or Irregular
When all angles are equal and all sides are equal it is regular, otherwise it is irregular:
   regular              irregular
 Concave or Convex
A convex pentagon has no angles pointing inwards. More precisely, no internal angles can be more than 180°.
When any internal angle is greater than 180° it is concave. (Think: concave has a "cave" in it)    
Properties
A regular pentagon has:Interior Angles of 108°
Exterior Angles of 72°
Area of approximately 1.7204774 × s2 (where s=side length)



Draw a regular pentagon.


Draw an irregular pentagon.

    

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  Dear students!  We begin new school year 2022-2023! I wish everybody master new skills and get knowledge! And pray for our victory!