國中 解答

已知 x 為整數,A = (2x + 3)2 + 10(2x + 3) + 25,則 A 必為下列何者的倍數?

在△ABC 中,∠A=67°,∠B=53°,若 O 點為△ABC 的外心,設△AOB、△BOC、△AOC 的周長依 序為 x、y、z,則下列何者正確?

如右圖,∆ABC中,D、E、F三點將BC ,,,, = 1: 2,M點為AB ,,,,: NC ,,,,的中點, 試問圖中哪一點是∆ABC的重心?

如右圖 ABCD 為一正方形,且AE 1 必需先證明∆ABE ≅ ∆CBE,請問依何種三角形全等性質可證明∆ABE ≅ ∆CBE? 2

如右圖,在∆ABC中,AB ,,,,、BE ,,,,分別平分∠BAC、∠ABC, !! ,,,, ⊥ ,,,, 下列敘述何者不一定正確?

已知 a、b 兩整數的乘積為奇數,b、c 兩整數的和為偶數,則下列敘述何者正確?

如右圖,AM ,,,, = 6,則∆ABC之面積為多少? CM = 5,且BC #! "!

△ABC中,G點為其重心,若∠A=30°,∠B=60°,則△AGB 面積:△BGC 面積:△AGC 面積=?

已知 G 為△ABC 三中線的交點,若三中線長之和是 21,則 G 到△ABC 三頂點的距離之和是多少?

I 為△ABC 的內心,已知△ABC 的面積為 84 平方單位,且三邊長分別為 13、14、15,則△ABC 的內 切圓面積為多少平方單位?

如右圖,I點為△ABC的內心,若∠A=80°,則∠BIC為多少度?

若 O 點為△ABC 的外心,OA ,,,,, = 8x + 3,則OC ,,,, =?

△ABC 為銳角三角形,若∠BOC=160°,且 O 點為△ABC 的外心,則∠A 的度數為何?

What does Amy mean by saying, “I cared only about my studies, but now I’m different?”

Which is true according to the letter?

Which is true about Ken in the reading?

What’s the moral of this story?  moral 寓意

Which is true according to the story?

Why do some people choose to live in a manga café?

What does “manga” stand for according to the reading?  according to 根據

Sam: Let’s go to the comic con today. Amy: Sorry, Sam. How about this weekend?

The kids opened the Christmas presents .

Look at the foreigner . She is my new teacher, Linda.

The knowledge of using light in the drawings made everything in the movie so real.