角1+角2=150°
角1+角2+角3=180°
所以角3=30
角2+角3=120°
角1+角2+角3=180°
所以角1=60
所以角2=90
在一个三角形中,角1角2角3为其三个内角,若角1+角2=150°,角2+角3=120°角1角2角3各是多少度
在一个三角形中,角1角2角3为其三个内角,若角1+角2=150°,角2+角3=120°角1角2角3各是多少度
数学人气:405 ℃时间:2019-10-19 00:58:34
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