绗?/p>
4
璁?/p>
鐩磋涓夎褰㈠拰鍕捐偂瀹氱悊
涓�銆併�栧吀鍨嬩緥棰樸�?/p>
渚?/p>
1
銆佸鍥撅紝宸茬煡
ACB=90
掳锛?/p>
AD
鏄?
CAB
鐨勫钩鍒嗙嚎锛?/p>
BC=4
锛?/p>
CD=
,
姹?/p>
AC
鐨勯暱銆?/p>
渚?/p>
2
銆佸鍥惧凡鐭?
ABC=30
掳锛?
ADC=60
掳锛?/p>
AD=DC
锛屾眰璇侊細
.
渚?/p>
3
銆佸凡鐭ョ洿瑙掍笁瑙掑舰鐨勮竟闀垮潎涓烘暣鏁帮紝鍛ㄩ暱涓?/p>
30
锛屾眰瀹冪殑鏂滆竟闀裤�?/p>
渚?/p>
4
銆佸鍥撅紝鍦?/p>
Rt
ABC
涓紝
ACB=90
掳锛?/p>
CD
鈯?/p>
AB
浜?/p>
D
锛岃
AC=b
锛?/p>
BC=a,AB=c,CD=h
姹傝瘉锛?/p>
锛?/p>
2
锛?/p>
锛?/p>
3
锛変互
涓鸿竟鐨勪笁瑙掑舰鏄洿瑙掍笁瑙掑舰銆?/p>