2025.8.30

หนังสือเรียน: (R3版)Here We Go! ２　光村図書

Unit 4 Tour in New York City

318

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Junior High2

なんかページ数最近少ないと
思ってたら、プリントとドリルに
直接書き込んでるだけだった…

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2025.08.31 公開

中二英語数学不定詞証明合同の証明二等辺三角形正三角形 unit4 自分を褒めたい math english イングリッシュ

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ページ1:

17-7
Date R7
830
8.108
Diy I must stay at home
today
Eri must practice the piano.
2. You
[2] (1) Myst we walk to the
Station?
piano here.
(7) You mustn't practice the
must not eat this (1) You must not play the
You must not talk here.
31170
Must I read this book?
(les) you must.
(2) ①
apple
Must they go to the library?
②
(No.) they don't have to.
P.109
D
-1) ( You must help your
friends
2) Must Yuji run every morning.
No he doesn't have to.
guitar in this room.
You must be kind to
everyone.
How
many
the students
must read books during the
Summer vacation?
Please must take off
this area.
②(1) 避難所を決めておく
(2) We must forget to include
information about shelters.
BH) Must Aya practice
sAccer every day?
Taro mustn't play
play videa
video game his room.

ページ2:

- must wash dishes.
many books the
How
students must read
during the summer
acation?
[[O
(I) I have to help my
201
mother.
(You don't have to stay here.
ose stay away from this per doesn't have
Eri to do
area
e mustn't forget to
clude information about
elters.
③川
Do you have to read this
book?
Mes. I do.
Does Kenta hare to go to
School tomorrow?
-mustn't play video
st Aya practice
-cer every day?
in his room
(20
No. He doesn't.
Pl
(I have to finish my
homework.
(2) Akira has to look for
Some good books
(3) You don't have to write
Your home here.
2/17
We have to practice tennis.
De R7 8 30
2) Do you have to use that
Computar now?
12) Do they have to work today? I We don't have to go to the
Yes, they do.
School early
13) My father doesn't have to & TTO) (B)(2),
buy a new car.
3) I have to close the door Pl
at six.
12) My mother doesn't have
make dinner today.
No he doesn't.
He kept reading the book
(all day.
to
③(1)
Maki has to walk to scho
3) What do you do have to everyday.
this afternoon?
He was reading the book
all day
②川頃を守る
2) In some cases,
(2)Do you have to use the
computer now?
We don't have to com
to school early tomo
P409
You don't have to evacuate. BCT)
Maki has to
by the walk
to the
School
How many books mu
the students read du
the summer vacation

ページ3:

R7830
Pil120
It is good to walk every
day
(2) It is interesting to learn
English.
(3) It is important to have.
break fast.
12/(1) It is necessary for us
to work togther.
1) It is exciting for Mike to
watch soccer games.
3/11)/ Is it interesting to see
Japanese movies?
2) It is not difficult for me
to answer the question.
"TB (DCD) It is good to get up.
early.
2) It is fun for Ken to play
Soccer.
3) Is it easy for them to!
speak Japanese?
It isn't difficult for her!
to play the piano.
311)
Do you speak English, Cumi?
- Yes. It's interesting for
to speak English.
me
(2) Is it easy for Jiro to ply
the guitar?
- No. It's not easy for him.
to play the guitar.

ページ4:

tryit 証明とは?
DD C B
仮定
DC
3組の辺がそれぞれ
等しい
try it角度や辺が
20
等しいことの証明問題
ΔABEとACBDにおいて、
仮定から、
AB=CB…①
BE=BD…②
<Bは共通…③
①②③より、
FA B C E A D C B E
tit証明はハンバーガーだ!①それぞれ等しいので、
2組の辺とその間の角が
△ABEEΔCBD.
おいて、合同な図形の対応する角
は等しいから、
である。
tryit証明はハンバーガーだ!②
仮定から、
AB=DC…①
AC=DB・・・②
BCは共通…③
∠BAE=∠BCD
tryit 三角形の合同の証明問題
△ABCとΔADEにおいて、
仮定から
AB=AD…①
tryit 証明はハンバーガーだ!③∠ABC=∠ADE…②
①②③より
3組の辺がそれぞれ
等しいから、
A A B C E A D C B
また∠Aは共通③
① ② ③より、
1組の辺とその両端の角が
それぞれ等しいから
△ABC=△ADE.
である
である。

ページ5:

tryit二等辺三角形の性質①tryit二等辺三角形の性質②
(1)
(2)
84
70
x
180-140
40
70 A.x=40,
180-84
x
=96
R
A.x=481
3)∠A=80°(頂)
∠B=∠C=50
A.x=50%
180
72
- 36 2114F 4B=∠C=72°
144
1.4x=72
BC=BD
ΔABDとLACDにおいて
仮足から
B CLAD & O
AB=AC…①
ZBAD=CAD…②
ADは共通…③
①②③より、
2組の辺とその間の角が
それぞれ等しいので
△ABDΔACD
合同な図形の対応する
泣や角は等しいから
∠ADC=∠ADC
BD=CDである。
try it
特別な二等辺三角形(正三角形)
△ABCにおいて、
仮定から、
∠A=∠B…①
∠B=∠C…②
①より、△ABCはこ
上等辺三角形で
AC=BC…③
②より、同様に
AB=AC…④
③、④より、
AB=BC=CAであり、
△ABCは正三角形で
ある