② A triangle with two of its angles equal to 60'is an equilateral triangle③ An isosceles triangle with one of its angles being 60" is an equilateral triangle④ An isosceles triangle with two equal angles is an equilateral triangle;() is/are incorrect.(A)none(B)one(C)two(D)three ...
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。
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
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。
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。
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 表示直角三角形,所以选 C 选项。A 选项 equilateral triangle 是等边三角形。B 选项 isosceles triangle 是等腰三角形。D 选项 scalene triangle 是不等边三角形。
A. 30 degrees B. 60 degrees C. 90 degrees D. 180 degrees 相关知识点: 试题来源: 解析 C。本题考查三角形内角大小。在直角三角形中,90 度角是最大的角,所以选 C。A 选项 30 度不是最大角;B 选项 60 度不是最大角;D 选项 180 度是三角形内角和,不是最大角。
A triangle has angles measuring 30 degrees, 60 degrees, and 90 degrees. The side opposite the 30-degree angle is 5 cm. What is the length of the hypotenuse? A. 10 cm B. 8 cm C. 6 cm D. 7 cm 相关知识点: 试题来源: 解析 A。在 30°、60°、90°的直角三角形中,30°角所对的...
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In a triangle, one angle is 60 degrees. The other two angles are in the ratio of 2:3. What is the measure of the largest angle? A. 低便向信则派你除需起低便向信则派你除需起48 degrees低便向信则派你除需起低便向信则派你除需起 B. 收场物江中号东般个直劳值收场物江中号东般个直...