Inthefigure5,MONisaatyaightline,Iftheanglesα、βandγ,satisfyβ:α=2:1,andγ:β=3:1,thentheangleβ=______.(英

题目简介

Inthefigure5,MONisaatyaightline,Iftheanglesα、βandγ,satisfyβ:α=2:1,andγ:β=3:1,thentheangleβ=______.(英

题目详情

In the figure 5,MON is a atyaight line,If the angles α、βandγ,satisfy β:α=2:1,andγ:β=3:1,then the angle β=______.(英汉小词典:atraight line直线,angle角,satisfy满足)360优课网
题型:填空题难度:偏易来源:不详

答案

∵∠AOB=180°,γ:β=3:1,β:α=2:1,
∴γ=3β,α=class="stub"1
2
β,
class="stub"1
2
β+β+3β=180°,
∴β=40°.
故答案是40°.

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