請問這題為什麼是等腰？求解

将 (A) BC 是∠A 的鄰邊(B) AC 是 ∠A 的對邊 (C) BC 是∠A 的對邊 (D)以上皆是。 如圖,AB 與 CD 皆為圓O 的弦,且E、F分別為 AB 與 CD 的中點,O為圓心,若 AB = CD 但不平行,則△OEF 必為下列何種三角形? -F D B E (A)正三角形 (B)直角三角形 (C)等腰三角形 (D)等腰直角三角形。

請問這題該怎麼計算，求解釋過程🙏

= -√5 = √6 ) 23 對於任意a、b 兩數,定義 a*b=(a+1)(2b-1)-3,若(x*x)*1=-3, 則x之值為何? q (A) - 3 2 或1 (B)-1或 (D) - (C)-1或 1成 m/~ 2 一号 或 3 2 OF 1

求解🙏

6. My husband and I are digging a have a place to swim in. (A) pound (C) pin in the yard of our new house, so our pet turtles can (B) pond (D) pipe

求解🙏，我找不到答案

第二部分:題組(第 24~43 題,共 20 題) (24~25) Dinosaurs Exhibition Here come the dinosaurs: they're back in Taipei again. Do you know these old animals of the earth? Don't just stay home and watch TV. Come and join us with your friends and family. You'll have a lot of fun here. Date: 6/15~9/23, 09:00-17:00 Place: Chiang Kai-Shek Memorial Hall Tickets: Weekday: $220/ adult; $200/ child Weekend: $250/ person. (Children under twelve can get a toy dinosaur for free.) To get more information, call us at 02-23929683 (09:00-17:00) Or surf http://dino.ishow.gmg.tw/ (24 hrs) dinosaur adult exhibition weekday information TU 24. Gary is talking about the exhibition to his friend. "The exhibition was not bad! We saw a lot of dinosaurs, and my son got a toy dinosaur for free. I had a great time with my son and my wife yesterday. However, it was so crowded there because it was Sunday." How much did Gary spend on the tickets yesterday? (A) NT$750. (C) NT$640. (B) NT$720. (D) NT$600. crowded 擁擠的

求解謝謝‼️‼️

如右圖,老王要在露營區設置涵管屋,已知水泥涵管內 直徑為300 公分(不包括涵管厚度)。他打算鋪設寬 240 公分的木地板 AB,試計算鋪設木地板後的最大高度 CD 為何? A:240cm²" P.1020 OF Jo 300 (1) 設 11 2 P.101 隔堂

第四題謝謝😅‼️‼️

(C) △ABD 面積:△ACD 面積=1:33:6 (D) △ADE 面積:△ABC面積-18 NT ) 4.在右圖數線上,為原點, A、B、C三點的坐標分別 為1、2、3、今明宏依下 列步驟操作: (A) 過原點作F。 ②在OF上依序取P、Q、R、S、T、U、V 七點,使 OP = PQ = QR = RS = ST = TU = UV 3 連接 VC ④ 過S點作 SE // VC 交數線於E點。 請問 OF 的長度為何? 1/7/20 7 。 。 (B) 本校 12 (c)-¹/7²2 (0) 13

求解拜託

2.)如圖,圓O、O、O,兩兩外切於P、Q、R三點,已知O,Oz=14,O2Og=10, OgO=12,試求各圓之半徑? OF = R P Jo 12 Fax

這兩題求解

N 5公分? 古 D 三、計算題:每題7分,共 14 分 1. 如右圖, 四邊形ABCD 為矩形, E、B、F三點共線,AEL BE, CFBF。若AE = 4,BE = 3, CF = 6,則 BD 的長度為何? 解: of 3 (B) (D) 3 2. 如右圖,兩長方形 ABCD、CEFG 中,D 點在 CG 上,AF 和 CG 交於 P點。若 AB = 4,BC=6,CE = 10 BD ,EF=16,則AP的長度為何? 解: E B A NE B G P D 。 E

為什麼是B

For c B 10. Sharon interest in collecting all kinds of postcards from foreign countries since 2008. (A) has (B) has had (C) has been (D) has had been

想問這題！

3. 如右圖,已知△ABC 與△CDE 均為正三角形,且B、C、D三點共線, BE 與 AC 交於F點,若 BC =3, CD =6,則 EF = ? 在OAFE和SCFF中 PCAFB=∠CFE(對頂角 且形//E(同位角相等) 故OF = COEF(內錯角相等, 二 AFB ~ CFE CAA) FU // ED 1 = 3 = FC : 6. FC = 2 3上第一次段考/1-2 D C 3 B