设等腰三角形(两底角相等的三角形)顶角的度数为y,底角的度数为x,则有[]A.y=180-2x(x为全体实数)B.y=180-2x(0≤x≤90)C.y=180-2x(0<x<90)D.y
C.y=180-2x(0D.y=180-x(0
D.y=180-x(0
题目简介
设等腰三角形(两底角相等的三角形)顶角的度数为y,底角的度数为x,则有[]A.y=180-2x(x为全体实数)B.y=180-2x(0≤x≤90)C.y=180-2x(0<x<90)D.y
题目详情
B.y=180-2x(0≤x≤90)
C.y=180-2x(0
D.y=180-
x(0
答案