若84度是顶角,则底角是:(180-84)÷2=48度
则由腰上高与底边组成的直角三角形可知
腰上的高与底边的夹角是:90-48=42度
等腰三角形的顶角是84°,则一腰上的高与底边所称的角的度数为多少?
等腰三角形的顶角是84°,则一腰上的高与底边所称的角的度数为多少?
数学人气:696 ℃时间:2019-11-10 16:57:08
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