立体几何多选题训练一详版答案.pdf

绔嬩綋鍑犱綍澶氶€夐璁粌涓€ 棰樺瀷涓€

1. m n 璁 , 鏄┖闂翠袱鏉′笉鍚岀殑鐩寸嚎锛岋仭锛岋仮鏄┖闂翠袱涓笉鍚岀殑骞抽潰锛岀粰鍑轰笅鍒楅€夐」涓紝姝ｇ‘鐨

鏄? BD )

A.鑻 / /飦? n / /飦?飦 / /飦 锛屽垯m / /n B . 鑻ワ仭 鈯ワ仮锛宮 鈯ワ仮,m 飪嬶仭 锛屽垯m / /飦

C. 鑻 n m 锛屽垯 D. 鑻ワ仭 飦 飦 飦 锛屽垯 鈯 , 鈯ワ仭,飦? /飦 n / /飦 鈯 锛 鈭 =l, m / /飦? m 鈯 m 鈯ワ仮

2. 宸茬煡m, n 鏄袱鏉′笉鍚岀殑鐩寸嚎锛岋仭锛岋仮锛岋仹 鏄笁涓笉鍚岀殑骞抽潰锛屽垯涓嬪垪璇存硶涓嶆纭殑鏄

( ABC ) A. 鑻 锛屽垯m / /n B. 鑻ワ仭 飦 飦 锛屽垯 m / /飦? n / 飦 鈯 锛 鈯ワ仹 飦? /飦 /

C. 鑻 / /飦? n / /飦? m / /n 锛屽垯飦? /飦 D. 鑻 鈯ワ仭, n 鈯ワ仭 锛屽垯m / /n

3. 缁欏嚭涓嬪垪鍏充簬浜掍笉鐩稿悓鐨勭洿绾縨, n,l 鍜屽钩闈仭锛岋仮 鐨勫洓涓懡棰橈紝鍏朵腑涓虹湡鍛介鐨勬槸

( ABD ) A. A 飪弇 l 鑻 锛岀偣 锛屽垯 涓 涓嶅叡闈 m 飪岋仭,l 飦狚 A m

B. 鑻 涓哄紓闈㈢洿绾匡紝 锛屼笖 锛屽垯n 鈯ワ仭 m,l l / /飦? m / /飦 n 鈯, n 鈯

C. 鑻 / /飦?飦? /飦? m / /飦紝鍒檒 / /m

D. 鑻 飪岋仭, m 飪岋仭,l m = A,l / /飦? m / /飦紝鍒欙仭/ /飦

4. 宸茬煡涓ゆ潯鐩寸嚎 鍙婁笁涓钩闈仭锛岋仮锛岋仹 锛屽垯飦♀姤飦㈢殑鍏呭垎鏉′欢鏄? ABC ) l, m B.l 鈯ワ仭, m 鈯ワ仮 A.l 飪岋仭,l 鈯ワ仮 ,l 鈯 m