9 sinf mavzu: Muntazam ko`pburchaklar. Maqsad: Ta`limiy

4. Mustahkamlash.( 15 min)
1 Darslikdan № 3, № 4, № 6. o`quvchilar tomonidan doskada bajarish.( 1 ball)

№ 3.

a) n= 3 , α - ?

Javob: 60⁰

b) n = 18, α - ?

Javob: 160⁰

№ 4.

2. 
   n = 6 tashqi burchagi - ?
   

Javob: 60⁰

6. 
   n = 12 tashqi burchagi -?
   

Javob: 30⁰

5- masala: Muntazam n burchakning har uchidan bittadan olingan tashqi

burchaklari yig`indisi 360 gradusga tengligini isbotlang






2.Qo`shimcha adabiyotdan
qo`shimcha mashqlar.

(98-6-40) Muntazam sakkiz burchakning ichki burchaklari

nimaga teng?

A)5P/4; B)120; C)130 ; D)150; E)135

(98-8-48) Har bir tashqi burchagi 24 dan bo`lgan

muntazam ko`pburchakning nechta tomoni

bor

A)24; B)18; C)15; D)12; E)10

(98-11-89) Muntazam sakkizburchakning nechta dioganali

bor?

A)8; B)10 ; C)24; D)16; E)20

5. O`quvchilarni baholash va rag`batlantirish ( 2min)

Jurnaldagi tartib raqami

Familiyasi,ismi, sharifi:_________________________________________________________

Geometrik shakl	Savol- javob	test	formula	mustahkamlash

Quydagilardan qaysi biri muntazam

ko`pburchaklar qatori?
A) kvadrat, parallelogramm, romb.
B) teng tomonli uchburchak, kvadrat.
C) romb, to`g`ri to`rtburchak, kvadrat.
D) muntazam beshburchak, kvadrat,romb.




6. Darsga yakun yasash

1. Muntazam n burchakning burchaklari

yig`indisi ga teng demak,

muntazam n burchakning har bir burchagi

formulasi bilan topiladi

2. Muntazam n burchakning bitta tashqi burchagi

Uyga vazifa

41-dars, 2- masala(og`zaki),

3-masala( f), 4-masala (a),

6-masala (a).