△RST is isosceles and ∠RST= 40°Column A

游客2025-02-24 18

问题 △RST is isosceles and ∠RST= 40°

Column A Column B
The sum of the measures of the two angles of 120°
△RST that have equal measure

选项 A、if the quantity in Column A is greater
B、if the quantity in Column B is greater
C、if the two quantity are equal
D、if the relationship cannot be determined from the information given

答案 D

解析 △RST是等腰三角形，且∠RST=40o
解：本题的正确答案为(D)。比较的左项为△RST中两个底角的和，该题需分两种情况进行讨论：①∠RST是顶角，则两个底角的和为：180o-40o=140o ②∠RST是底角，则两个底角的和为：2×40o=80o

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△RST is isosceles and ∠RST= 40°Column A

[img]ct_gre5image100[/img]OisthecenterofthecircleColumnA

kisanintegergreaterthan1.ColumnA

[img]ct_gre5image012[/img]ColumnAColumnBk

[img]ct_2image012[/img]ColumnAColumnBn5

[img]ct_gre5image002[/img]Thediameterofthecircleis10.ColumnA

x>zy>zColumnAColumnBx+yz

m,p,andxarepositiveintegersandmp=xColumnAColumnBm

[img]ct_2image016[/img]Inthefigureabove,ifthesumofeachcolumn,row,and

2AF=AB=BD=DE=AEColumnAColum

[img]ct_gre5image062[/img]ColumnAColumnBThemeasureo

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