濡傚浘,涓€鍧楁?褰㈢幓鐠冪殑涓嬪簳鍙婁袱鑵扮殑涓€閮ㄥ垎琚?憯纰?閲忓緱鈭燗=120掳,鈭燚=105掳,浣犺兘鍚︽眰鍑轰袱鑵板す瑙掆垹P鐨勫害鏁
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/28 00:38:29
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濡傚浘,涓€鍧楁?褰㈢幓鐠冪殑涓嬪簳鍙婁袱鑵扮殑涓€閮ㄥ垎琚?憯纰?閲忓緱鈭燗=120掳,鈭燚=105掳,浣犺兘鍚︽眰鍑轰袱鑵板す瑙掆垹P鐨勫害鏁
濡傚浘,涓€鍧楁?褰㈢幓鐠冪殑涓嬪簳鍙婁袱鑵扮殑涓€閮ㄥ垎琚?憯纰?閲忓緱鈭燗=120掳,鈭燚=105掳,浣犺兘鍚︽眰鍑轰袱鑵板す瑙掆垹P鐨勫害鏁
濡傚浘,涓€鍧楁?褰㈢幓鐠冪殑涓嬪簳鍙婁袱鑵扮殑涓€閮ㄥ垎琚?憯纰?閲忓緱鈭燗=120掳,鈭燚=105掳,浣犺兘鍚︽眰鍑轰袱鑵板す瑙掆垹P鐨勫害鏁
因为:角ADC=105 角BAD=120(已知)
所以:角ADC+角PDA=180
角BAD+角PAD=180
角PAD=180-角BAD=180-120=60
角PDA=180-角ADC=180-105=75
角PAD+角PDA+角P=180
所以角P=180-角PAD-角PDA=180-135=45
因为ABCD是梯形,因此角B+角BAD=180 角C+角ADC=180,可得角B=60,角C=75。因此角P=180-角B-角C=180-60-75=45