娴欐暀鐗堝叓骞寸骇鏁板涓嬪唽銆婄鍥涚珷
---
绗簲绔?/p>
鍥涜竟褰㈢患鍚堛�嬫娴嬭瘯鍗?/p>
鑰冪敓娉ㄦ剰锛?/p>
1.
鏈嵎鎬诲垎
100
鍒嗭紝鑰冭瘯鏃堕棿
90
鍒嗛挓銆?/p>
2.
绛旀璇风敤钃濄�侀粦鑹查挗绗旀垨鍦嗙彔绗斿～鍐欍�?/p>
棰樺彿
涓�
浜?/p>
涓?/p>
鎬诲垎
21
22
23
24
25
寰楀垎
涓�銆侀�夋嫨棰橈細
锛?/p>
36
鍒嗭級
1
銆佷笅鍒楃粰鍑虹殑鏉′欢涓紝鑳藉垽鏂洓杈瑰舰
ABCD
鏄钩琛屽洓杈瑰舰鐨勬槸
( )
A.AB
鈭?/p>
CD
锛?/p>
AD = BC
锛?/p>
B.
鈭?/p>
B =
鈭?/p>
C
锛涒垹
A =
鈭?/p>
D
锛?/p>
C.AB =CD
锛?/p>
CB = AD
锛?/p>
D.AB = AD
锛?/p>
CD = BC
2
銆佺煩褰㈠叿鏈夎�岃彵褰笉鍏锋湁鐨勬�ц川鏄紙
锛?/p>
A.
涓ょ粍瀵硅竟鍒嗗埆骞宠
B.
瀵硅绾跨浉绛?/p>
C.
瀵硅绾夸簰鐩稿钩鍒?/p>
D.
涓ょ粍瀵硅鍒嗗埆鐩哥瓑
3
銆佸鍥?/p>
,
涓嬪垪鍥涚粍鏉′欢涓紝鑳藉垽瀹氣枴
ABCD
鏄鏂瑰舰鐨勬湁
(
)
鈶?/p>
AB=BC
锛屸垹
A=90
掳锛涒憽
AC
鈯?/p>
BD
锛?/p>
AC=BD
锛涒憿
OA=OD
锛?/p>
BC=CD
锛涒懀鈭?/p>
BOC=90
掳锛?/p>
鈭?/p>
ABD=
鈭?/p>
DCA.
A
锛?/p>
1
涓?/p>
B
锛?/p>
2
涓?/p>
C
锛?/p>
3
涓?/p>
D
锛?/p>
4
涓?/p>
4
銆?/p>
濡傚浘锛?/p>
鍦?/p>
鈻?/p>
ABCD
涓紝
CE
鈯?/p>
AB
锛?/p>
涓?/p>
E
涓哄瀭瓒筹紟
濡傛灉鈭?/p>
D=75
掳锛?/p>
鍒欌垹
BCE=
锛?/p>
锛?/p>
A.105
掳
B.15
掳
C.30
掳
D.25
掳
绗?/p>
4
棰樺浘
绗?/p>
5
棰樺浘
绗?/p>
6
棰樺浘
5
銆佸鍥撅紝
鈻?/p>
ABCD
鐨勫瑙掔嚎
AC
涓?/p>
BD
鐩镐氦浜庣偣
O
锛?/p>
AB
鈯?/p>
AC
锛岃嫢
AB=4
锛?/p>
AC=6
锛屽垯
BD
鐨勯暱鏄紙
锛?/p>
A
锛?/p>
8 B
锛?/p>
9 C
锛?/p>
10 D
锛?/p>
11