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数学 高校生

同一直線上にないというところから理解ができません。お願いします。

る. このことから,右のようにに、 長さより大きい△ 三角形の2つの辺の和は、残りの辺の長さより大きい という性質を利用することができないか考える m つまり,BD=PD, CE=PE となる △PDE が存在すること を示すことができれば, DE <BD+CE を示せそうである. 右の図のように、線分AM 上で, BM=CM=PM とな るように点Pをとる. 人式の証明 海形の or △BDM と △PDM において, ・成立条件2組の辺とその間の角が, それぞれ等しいので △BDM=△PDM a LA C a<b+c 9 /P E 点P と PD, PE の補助 線を引く. # BMCIA (0) Focus よって, BD=PD ...... ...① ∠DBM = ∠DPM ...... △CEM と △PEM において同様に考えて, △CEM=△PEM ML よって, CE=PE …③ ∠ECM=∠EPM …④ ②④より A A DE <BD+CE 三角形 成立条件:同一直線上 じゃない ∠DPM + ∠EPM= ∠DBM+ ∠ECM +28) = ∠ABC+ ∠ACB する。 3208AA =180°-∠BAC <180° [ + ] よって, 3点D, P, Eは同一直線上にない. したがって, △PDE は存在し,三角形の成立条 件より, DE <PD+PE ①③ 5より、 DE <BD+CE 3点が同一直線上にある とき, DE=BD+CE と なるので,そうならない ことを示しておく. 28 28 A 08 411 STAJ 不等式の満たす意味と同じ図形の性質がないか考える 内 214 (1) A て,辺BCの中点をMとする. -BA Farel 朱

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英語 高校生

この問題の解説で大切な部分は何処か教えて欲しいです🙏

Part 2 Reading 実 践/演習 次の英文を読んで,a~eについて本文の内容と一致するものを①~③の中から1つずつ選びなさ loog sui 1 い。 I have to make a speech in the next Englishi class. I decided to talk about my own town, so I started looking for good stories about it. First I used the Internet and entered the name of the town. I thought I could get a lot of good information very quickly, but I couldn't. There were some homepages about my town, but I found some were wrong and others were the stories we all already knew. Next I went to the library. I tried to find useful books. but again I couldn't. I asked the He said, “Sorry, we have few, man at the counter if there were any books about the town. but what do you want to know ?” So I explained to him about my speech. Then he said, 1 can tell you all the things I know about our town.”. He has lived here for sixty years and knows a lot about the town. Ilearned many things from him. I will be able to give an interesting speech. la 1elg la 0a speech 出 6angalaateland oaery ご愛a.I began to collect {2 the information about my town. 人丈さ 具 ふこ Sn aF13 an English class の d e 言0no woRO時 hatuhdy s 下ab. I got{ 2 a lot of } useful stories from the Internet.dh 内 が enjoyed tal③ good oticO ( heis lem in his garden. "They often made jokes with each other しhish 液 O1"Do you know about my speech ?"npdea Shis ffc.I said to the man in the library, {2 “Do you know about the town ?" lske lODo you have any books about the town ?" byでda 戻りでFO he had lived in the town for a long time. ad. The man knew about the town well because { 2 he worked for the library. by plane. 土制効 人(O the Internet. 3 he learned many things from the books. パーモーエニ e. I will make a good speech thanks to { 2 the books in the library. で ドンに行 ③ the man in the library. れ ヒント thanks to ~は 「~のおかげで」。良いスピーチができそうなのは何(誰) のおかげ? おます で い場 の 下 ム ま合 stwals

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英語 高校生

答えが知りたいですお願いします

STEP 09: イディオム[動詞関連] Idioms: Verbs DATE: w Frame > Grammar イディオム [動詞関連] く京都薬科 S05 (大阪学院。 空所に入れるのに最も適切なものを選びなさい。 EXERCISE A )with my friends in New Zealand. ③ touch 2mind D exchange nt④ relation (センター試験) is atd く金沢工業 n00 IfGeorge doesn't stop smoking, he will ( ) the risk of developing lung cancer. のdo 2 get 3 make 4 run t 〈センター試験) 0 (拓殖 ロ3 Iwonder why she can't get ( 2 between )with her classmates. beof od 4 over O along 3 near く拓殖大) 〈北陸 Jeel npitiaog Tod 口04 Does this answer ( 0 give loos I has bamiag, ) sense to you? I can't understand it. bue 199amam odtT of 2 cause 3 mean 4 make くセンター試験) 6 bngW senig orfs o deendu0 gdt, bagose ag egs to ( 口05 Ihad to make up ( ) my lack of knowledge by reading a lot of books. Tortus adfT TIO 反経済 B( O for 2) over 3 to の with 〈学習院大) 30 )ofaegom gmge om,bmgl opid, boalpn,1 ne(W 口06 The representatives made a plan for the school festival and the other 8計口 JeeupeT Vmn(. students carried it ( oh betrud ② out 0 on 3 under の with くセンター試験) 芸林大 anogn, bgbeenJ gausged ai llog of bgrt T tud5 m. 口07 Ifind it difficult to get up early in the morning, so I have to ( Jog bate I @r口 breakfast. PLGSTU O do without T9VO 9e Atrw husg © 2 get rid of 3 put up with slow down ) W liviO er (センター試験) uo oham ① )in the dictionary. 大 Juo adond S 口08 Idon't know what this word means. I'll look it ( 0 about 2 for 3 through の up くセンター試験) 口09 Would you ( taia qiwa 19d ( )eM lat pt,eldiaaoqmi Jaomis ei 11 s口 )me up at the station at six? de S TOTI bring 0 send 3 pick 3s ① catch 〈花園大) n d ot.juo ( 口10 Kunio was ( aoda,pigg bpibeyg #yoggrt pdeow edt deuadilA SS 口 ) fun of by his friends at school. O cooked 2 created ③ prepared ④ made J09w D 〈鶴見大) 【編嶋黒則」

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