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数学 高校生

(2)の[2]についてです 2辺を共有する場合 A.B.HとA.B.Cの2つあると思うんですけど、なんでA.B.Hの1つだけなんですか? 教えて下さい💦🙇‍♀️

PR ② 24 正八角形について,次の数を求めよ。 8 (1) 4個の頂点を結んでできる四角形の個数( (2) 3個の頂点を結んでできる三角形のうち,正八角形と辺を共有する三角形の個数 (1) 4個の頂点で四角形が1個できるから、求める個数は 100 DO 181 8・7・6・5 =70 (個) 4・3・2・1 (18) C 8C4= (2) 正八角形の頂点を右の図のように定 PR める。 20 [1] 正八角形と1辺だけを共有する 場合 辺AB だけを共有する三角形の第 3の頂点の選び方は4通り。 他の1辺だけを共有する場合も同様 であるから,できる三角形の個数は 4×8=32 (個) [2] 正八角形と2辺を共有する場合 2辺HA, AB を共有する三角形は △HABの1つだけである。 よって,できる三角形の個数は 1×88(個) RIDEO したがって, 正八角形と辺を共有する三角形の個数は 32+8=40 (個) C B. D B 3-19 BAND D E A 「レゼントを受E H F H G (2) 共有する辺の本数は 1本、2本の2通りの場 合がある。 ←A,Bとそのすぐ両隣 の2点を除くから 8-(2+2)=4(通り) 共有する 2辺は,正八 角形の隣接する 2辺。 VEGFOXO FROSS ◆正八角形の隣接する 2 辺の組は 8組。 和の法則。

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英語 高校生

英文長くてすみません💦 1番最後のitは何を指しているのでしょうか。署名を集めたことですか?それともプラスチック汚染のことですか?それともその後にHowever,they received no answer from the government of Bali とあるの... 続きを読む

Bye Bye Plastics Scene 1 1 Sisters Melati and Isabel were 10 and 12 years old when they were by a lesson in school in Bali about significant people such as Nelson Lady Diana, and Mahatma Gandhi. They returned home and wondered inspired Mandela, G-1 in 2013 and has now grown into a well-known international movement which "What can we do as children in Bali, NOW, to make a difference?" That was まさに the very beginning of their campaign called "Bye Bye Plastic Bags." It started Scene 2 the gove thanked agreed to 6 In 201 5 but the thought collected says NO to plastic bags. 連結形(well+過去分詞) 平方メートル 2 Bali is known by locals as an island of gods and a green paradise. People in Bali, however, produce 680 cubic meters of plastic garbage a day. Amazingly, this is about the size of a 14-story building, but less than 5% gets recycled. 未満 階 thrown The rest ends up in drains, rivers, and the ocean, or it is just burned or be動詞+過去 away. Such plastic pollution is now damaging the whole island. より動作を強調 remaine and try Scene 4 7 On ban or or pla →理由(既知情報) Tuow 3 Since they were driven by a love of their home and its nature, Melati and Isabel started Bye Bye Plastic Bags in October 2013. Their aim was to put a ban on the use and sale of single-use plastic bags in Bali to stop plastic pollution. Their first efforts focused on giving out non-plastic bags, such as net bags, newspaper bags, and 100% organic material bags, to local shops. They also began to teach locals and let them know about the pollution problems. 取り組み G-2 4 In order to educate all the island on the dangerous effects of single-use plastic bags, Melati and Isabel thought that government policies needed to change. They decided that they should collect one million signatures so that officials would not ignore them. To collect that many signatures, they came up with a great idea: collecting signatures at the very busy Bali International Airport. They went there and talked with officials, but these people wouldn't let them do so at first. The sisters talked again and again, and finally they were allowed to collect signatures there. As a result of this great campaign, they were invited to talk about it on TV programs and also at the United Nations. G-2 Scene 3 pollut 8 M 15 teena of w ed just 9 ar

解決済み 回答数: 2