【中学受験算数/SPI】平面図形の面積　脳トレ問題　☆3.2【基礎問題演習/偏差値up】

This is a problem about finding the area of ​​a plane figure. This channel has previously explained similar problems. This problem seems to have many possible solutions. Of course, you could use the double angles of a 1:2 right triangle, but this time I'll explain two ways to solve it without using that. First, we'll look at similarity of right triangles. This is a commonly used method, so I hope you can do it properly. There's also an easy way to do it if you look closely at the figure and notice something. Once you realize it, it's a pretty easy problem, but you want to be able to get the answer even using similarity. . This time, I'll mark it as 3.2. ◇◇◇◇Related Videos◇◇◇◇◇ [Junior High School Entrance Exam Math] Plane Figures: Folding a Square [The Most Difficult Class]    • 【中学受験算数】平面図形・正方形の折り曲げ【最難関クラス】   [Junior High School Entrance Exam Math] Plane Figures: Folding a Square [The Most Difficult Class]    • 【中学受験算数】平面図形・正方形の折り曲げ【最難関クラス】   Subscribing, liking, and commenting on this channel will encourage me to keep improving! We aim to provide content that will help students improve their academic performance for junior high school entrance exams and provide engaging math lessons that are thought-provoking. In math exams, one question is roughly equivalent to a standard deviation score of 2 to 2.5 (even taking into account the population and point distribution). In this video, we will explain how to think about the questions and what to do during the exam, aiming to improve your standard deviation score by 5. ◆Subscribe to the channel here↓    / premiumprivateschooladmissionsguidanceapex   [Takaaki Kono] A graduate of Nada Junior High School and Nada High School. He has over 30 years of teaching experience. While attending university, he worked at a major prep school, where he created many textbooks for the Nada Junior High School Open Test, the Public Academic Ability Test, the Pass/Fail Assessment Test, Sunday Special Training for Preferred Schools, and the highest level of special training. He currently runs a private school/small group tutoring school in Kyoto called "PremiumPrivateSchoolAdmissionsGuidanceAPEX." ★APEX: Prestigious Private School Entrance Tuition★ Located in Shijo Karasuma, Shimogyo Ward, Kyoto City, we provide entrance exam preparation for junior and senior high schools, including Nada, Rakunan, Rakusei, Todaiji, and Higashiyama, as well as individual and small group instruction for junior and senior high school students. Address: 301 De Reed Building, 289 Ogisakaya-cho, Shimogyo Ward, Kyoto City Phone Number: 075-343-8970 (Weekdays 2:00 PM - 10:00 PM, Saturdays 10:00 AM - 9:00 PM) Email Address: [email protected] Website: https://www.kyoto-apex.jp/ #JuniorHighSchoolEntranceExams #NadaJuniorHighMath #Math