國中 解答

如右圖,小平是位景觀設計師,他負責將一個平行四邊形公園的花卉植栽計畫,為了增加視覺層次感, 他決定將公園AD及BC的邊長均平分成四等分後,其中鋪色部分為「紫色薰衣草區」,其餘為「白色百合 紫色薰衣草區面積 區」,求 = ?(素養題) 白色百合區面積 3

如右圖,梯形 ABCD 中,AD // BC,∠A=130°,∠D=100°,若AD=4,BC=7,則DC=?

如右圖,四邊形 ABCD 與四邊形 BCEF 皆為平行四邊形,其中BF⊥CD,且 D 為BF之中點。 若AB=5、DF=12,則六邊形 ABCEFD 的面積為何?

如右圖,將一個平行四邊形分成 16 個一模一樣的小平行四邊形。若以顏料塗滿△ABC,至少須用完 1.2 瓶 顏料,則將△DEF 塗滿,至少須用完幾瓶顏料?(素養題)

如右圖,將五邊形 ABCDE 沿直線BC 若∠A=103°、∠E=110°、∠D=113°、∠ABC=115°,則∠1=?

如右圖,小中畫一隻熱帶魚,已知L1 //L2 、L3 // L4 ,若∠3+∠4=50°,且∠2=130°,則∠1=?

已知四邊形 ABCD 中,AB // DC,若再加上一個條件後,可以推得四邊形 ABCD 是平行四邊形, 這個條件可能是下列何者? (甲) AB=DC (乙) AD // BC (丙) AD=BC (丁) ∠BAD=90° (戊) ∠ADC + ∠DCB = 180° (己) AC=BD

如右圖,△ABC為一正三角形,四邊形ADEF為一正方形,其中D為BC上的一點,則下列何者正確?

如右圖,等腰梯形 ABCD 中,AD // BC,若AD=5,BC=15,∠ADC=135°,則AB =?

如右圖,若BD為正整數,則BD的值可能為何?

如右圖,L1 // L2 ,已知∠ABC=100°,∠2=55°,求∠1=?

如右圖,△ABD 中,C 為BD 的中點,連接AC並延長至 E 點,使得 AC=CE,連接 BE及 DE, 若AB=12,AC=8,則下列敘述何者錯誤?

Country: South Korea [每個選項只使用一次]

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on the ground.

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