三角形の個数問題で(1)で最後の式で3-1をしてるのは何故ですか？

考え方 解 LEEN Sat 例題 194 三角形の A1, A2, A3, ..., A12 を頂点とする正十二角形が ある。この頂点のうち3点を選んで三角形を作ると き,次の個数を求めよ. (1) 二等辺三角形 (2) 互いに合同でない三角形 (1) 二等辺三角形は、 右の図のように底辺の垂直二等 分線について対称になる. つまり、頂角にくる点を固定して, 底角にくる点 のとり方を考えればよい. A1~A12 について同様に考えれば, 個数を求める ことができるが, 正三角形になる場合に注意する. (2) 頂点間の間隔に着目する. 1 右の図のように①と②は合同 で ①と③は合同でない. (1) A1 を頂角とする二等辺三角形は, 線分 A1A7 に関して対称な点の組 (A2, A12), (A3, A11), (A4, A10), (A5, A9), (A6, A8) の5通り Ag 3-1? _60-(3-1)×4=52 (個) A1 A7 A 10 2 A5 頂点は12個より, 5×12=60 (個) oa このうち,正三角形となる4個の三角形は3回重複して 数えている. よって, A12 Au A 10 A9 A8 (A) Ai AZ A₁ AS As A4 正三角形は他の頂点 から見ても二等辺三 角形なので、重複し て数えてしまう. UT 正三角形となるのは (A1, A5, Ag), (A2,A6, A10),

4がわかりません _教えてください🙇‍♀️💦

5 ( )内の語を並べかえて, 英文を完成させなさい。 ただし、不要な語が1つあ ります。 1. Soccer in the US (not/is/as / Japan / less / in / as/popular). Soccer in the US is not as popular as in Japan. 2. (planet/very/than/much/a/Jupiter/bigger / is) the Earth. Jupiter a planet is much bigger than the Earth. 3. Daisuke (fast/can/as/as / faster/swim/Tomoko ). Caisule can swim as fast as Tomoko... 4. Maria (better / than /is/player/Emma/-a/tennis /plays). Tennis player Maria is a tennis player better than Emma.... 5. Today's test was (as/as / difficult not the one/previous / more). Today's test was not as difficult as the previous..one.

このmuch って何でしょうか？ 漠然とした質問ですみません🙇‍♂️ 教えてください。

190 This air conditioner uses half as one]. [much electricity as that

答えは➁です。なぜ④が違うか、どなたか教えてください。🙇‍♂️

Jeff and Jenny saved ( 1 as a lot of money as money as a lot as ) they could to visit their uncle in Hawaii. 2 as much money as 4 money as possible as

四角3の答えがcなんですけどこのusedはどんな意味があるんですか教えてください🙇‍♀️

Read this essay by a university student, Daichi, and answer the questions. C 1 At university, I finally got a chance to study abroad in the UK. I had always hoped to visit there. My high school English teacher had often talked about the UK, and I became 英国(イギリス) A fascinated by the historic architecture there, especially the beautiful palaces and churches. C 歴史に残る 建築 2 When I went to the UK, there were many surprises and challenges. Firstly, there were so many people from all over the world. I could hear many different languages, including French and Chinese, especially in cities. As I made friends with classmates from different countries, I realized that English is really international. Secondly, I was asked about Japan many times, but it was difficult to describe our traditional customs or modern culture. So I also realized that I had never thought very much about them, but now I want to know 現代の more. 3 Finally, I felt that I changed a little, too. By the time I returned to Japan, I liked to eat more bread! Also, I ( 2 ) much shyer, but in the UK, I had to ask local residents about many things, like which bus I should take. So I'm not shy of talking to strangers 内気 anymore! ためらう 見知らぬ人 Put the events below in time order. RS D- OC a D-C a. start studying in the UK come to like bread イギリスで勉強はじめる 110²014771-183 6. come back to Japan d. be told about the UK by English teacher 日本にもどってくる 英語の先生によってイギリスのはなしをされる 1 2 Which of the follow is NOT part of many surprises and challenges? *part of [~ RS a. Not only English but also many different languages were spoken in the UK. b. Daichi had to speak to local people and ask many questions. c. Daichi was told to change his eating habit. d. People often asked about Japan but Daichi couldn't easily answer. vidi 3 Choose the best phrase to fill in the blank 2. c. used to be d. must be a. am b. have been 以前は恥かしがっていた 4 What did Daichi learn from his experiences in the UK? Fill in each blank with a suitable word. ( (1) English is so (International) that people from different countries) use it for communication. Customs ) or modern (2) He didn't know much about traditional Japanese ( ( ). Culture

【至急‼️】これの日本語訳お願いします🙏🏻🙏🏻

傍注に出ている単語を○で囲みましょう。 droid yin bute uov 映画『君の名は。』のキーアイテムは何ですか、 それは何を表していますか Do you know the Japanese anime movie / Kimi no Na wa, or Your Name? || 1111 =17 B&nP=xal 017040, ZUETAN The hero and the heroine each wear kumihimo. // This key item shows us / GTB STORT ni RU COJAR the basic theme of the story: musubi. // This Japanese word means the ties 合 FOTO item 195 ) 80 ad anotad viSİXOR JUD between people / over time and space. // A4-XERO nem banised-annews ) mid (to (1) estamento il -ket 映画『君の名は。』は若者にどんな影響を与えましたか. 2 Thanks to the movie, / young people / around the he world as as in Japan / well as in you do t 33364 became interested in the art of kumihimo. o. // ©Now some of them even make - a 21 kumihimo / by themselves. // ENJ .(saidw \\ gob gid] svar 1 組紐についてどんな問いかけがされていますか. 3 The handicraft of kumihimo / has a long history. // How did the tradition mooi edi otni smo 10 ist beriw .Oh. of tying develop? // How did musubi begin / to express the connections between y the Saab ach (mudis \ no\ blo Vat V people? // [101 words] de MAJSC 3pm bluso 1 Jud う. as well lin

4番の1.です。なぜthatの後の主語はyouになるのですか？自分のことなのでIなのではないのですか？

Thomas is ( looking sly for ) a nice tie that goes well with his shirt. 3. こちらに来てこのコピー機の使い方を教えてくれませんか。 Could you come (oven (here) and teach me how to use this c machine? 4 Put the Japanese sentences into English using the words in parentheses. 1. よい席をとるには早く来なければならないということを私は学んだ。(learn/seat) I learned that you have to come early to get a cha 2. 昨晩の夢はほとんど映画のようだった。 (almost) like a last night's dream was as almost the movie The dream I had Tast nights 入試にチャレンジ Fill in the blanks with the most suitable words from the list b 1. Michael got up early ( ) be in time for the first train. (14

今日指名されるのでお願いします🙏 下の四角から当てはまる語を選んでください！

Review the Key Expressions 各問、選択肢から適切な単語を選び、英文を完成させましょう。なお、余分な単語が1語 ずつあります。 1. 私は「天は自ら助くる者[~する人々]を助く」ということわざを強く信じている。 I( ) believe the ( ) “( ) helps )( ) help ( )." to gaiog themselves those firmly myself Heaven who proverb 2.そのスポーツ講師は、激しい運動をする前の準備運動 (についてその重要性)を周知 させている。 yam smit visatio The sports ( wardi grirabi) aboutala is(_____ ) the ( ) up before( ) strenuous ( doing spreading warming letting exercise word instructor wishau 3. 最終の成績は、すべて授業への参加と期末試験の結果による。 wo brin Your ( ) ( ) all ( )( ) your 2 class ( and the ( ) of your final exam. participation to final on grade depends result 4. 親友と大喧嘩してから、剛は彼からなるべく離れていようと決めた。 After having a big ( ) with his ( to ( ) as ( possible. as fight close stay far from not ) away ( carli bniwgnerda arly brn ) friend, Tsuyoshi decided ) him (

合っていますか？

G-1 受動態の分詞構文 (being + 過去分詞) 通常 being を省略して過去分詞で始める。 a. (Being) Loved by many people, Barry was missed when he died. cf. As he was loved by many people, Barry was missed when he died. b. (Being) Given enough training, most dogs can become a watchdog. G-2 完了形の分詞構文 (having + 過去分詞) 分詞句の表す時が, 主文の表す時よりも前であることを示す。 a. Having become a therapy dog, the dog was loved by many patients. cf. As[After] it had become a therapy dog, the dog was loved by many patients. b. Having played with the dog, I thought it could become my good friend. Exercises- 1 )に適切な語を入れなさい。 2文がほぼ同じ意味になるように,( G-1 1. If I am given enough time and money, I will visit Switzerland. =( Given ) enough time and money, I will visit Switzerland. 2. When they are seen from the hospice in summer, the Alps look so beautiful. =(Seen) from the hospice in summer, the Alps look so beautiful. 3. As he was found sleeping in a cave, the boy was carried back to the hospice. =( Found) sleeping in a cave, the boy was carried back to the hospice. 4. When she was asked about her dream, Yumi spoke of becoming a dog trainer. =( Asked about her dream, Yumi spoke of becoming a dog trainer. 2 )に適切な語を入れなさい。 G-2 2文がほぼ同じ意味になるように,( 1. Since I have found he has talent as a watchdog, I want to keep the dog. =( Having )( found ) he has talent as a watchdog, I want to keep the dog. 2. After he had had training, the dog started to serve as a police dog. = (Having ) ( had ) training, the dog started to serve as a police dog. 3. As he had spent all of his energy, the dog couldn't continue walking. = (Having )( spent ) all of his energy, the dog couldn't continue walking. 4. After they had heard his rescue story, the Swiss people were very proud of Barry. = ( Having ) ( heard ) his rescue story, the Swiss people were very proud of Barry.

日本語を英語に直す問題で、 この部屋は私の部屋よりも小さくはない。 の答えがThis room isn't smaller than mine. だったのですが This room isn't as small as my room ではだめでしょうか