: a drafting instrument consisting of a thin flat right-angled triangle of wood or plastic with acute angles of 45 degrees or of 30 degrees and 60 degrees 3 : a situation in which one member of a couple is involved in a love affair with a third person Illustration...
1 首先在所拼图形的左端,放上紫色图形,如图。2 在紫色图形的右侧,放上黄色图形挨着,下端一齐,如图。3 在黄色图形的左上侧,放上绿色图形挨着,如图。4 在黄色图形的右上侧(所拼图形的右上端),放上红色图形挨着,如图。5 在黄色图形的右侧(所拼图形的右下端),放上蓝色图形挨着,如图,这样就顺利过关...
If a triangle has angles of 30 degrees, 60 degrees and 90 degrees, what kind of triangle is it? A. Equilateral triangle B. Isosceles triangle C. Right triangle D. Scalene triangle 相关知识点: 试题来源: 解析 C。本题考查三角形的概念。有一个角是 90 度的三角形是直角三角形,right triangle...
A triangle has angles of 60 degrees, 70 degrees, and what other angle? A. 40 degrees B. 50 degrees C. 60 degrees D. 70 degrees 相关知识点: 试题来源: 解析 B。三角形内角和是 180 度。已知两个角分别是 60 度和 70 度,那么第三个角就是 180 减去 60 再减去 70,等于 50 度。
百度试题 结果1 题目4)A triangle with two interior angles of 60° is a/antriangle. An equilateral trianglehas line symmetry, and it haslines of symmetry. 相关知识点: 试题来源: 解析 4 equilateral, 3
在\triangle{ABC} 中,b+c=4,\angle{A}=60\degree,求\triangle{ABC} 面积的最大值。相关知识点: 试题来源: 解析 解:三角形\triangle{ABC} 的面积S=\dfrac{1}{2}bcsinA=\dfrac{\root \of {3} }{4} b(4-b)=-\dfrac{\root \of {3} }{4} (b-2)^2+\root \of {3}当b=2时,S有...
A. 90 degrees B. 120 degrees C. 150 degrees D. 180 degrees 相关知识点: 试题来源: 解析 A。三角形内角和是 180 度,已知两个角分别是 30 度和 60 度,那么第三个角是 180 减去 30 再减去 60 等于 90 度。选项 B、C、D 不符合三角形内角和为 180 度的条件,错误。
What is the measure of angle C? A. 50 degrees B. 60 degrees C. 70 degrees D. 80 degrees 相关知识点: 试题来源: 解析 A。三角形内角和是 180 度,已知角 A 和角 B 的度数,那么角 C 的度数为 180 - 60 - 70 = 50 度,所以选 A。
4.a musical percussion instrument that consists of a steel triangle, open at one corner, that is struck with a steel rod. 5.a group of three; triad. 6.a situation involving three persons, esp. one in which two of them are in love with the third. ...
A triangle has angles of 30 degrees, 60 degrees, and what degree? A. 70 degrees B. 80 degrees C. 90 degrees D. 100 degrees 相关知识点: 试题来源: 解析 C。解析:三角形内角和为 180 度,已知两个角分别为 30 度和 60 度,所以第三个角为 180 - 30 - 60 = 90 度,选 C。