The two rays share a common endpoint called the vertex. Looking at the figure, vertex O is marked as the point where the two arms meet. What are Degrees? Degrees are a unit of measurement for angles. Consider breaking a circle into 360 equal pieces. A “one-degree angle” is defined ...
The sum of two angles is 150 degrees. One angle is measured as 60 degrees. What is the measure of the other angle? A. 30 degrees B. 90 degrees C. 120 degrees D. 210 degrees 相关知识点: 试题来源: 解析 B。两个角的和是 150 度,其中一个角是 60 度,那么另一个角就是 150 - 60 ...
解析 C。本题考查三角形内角和为 180 度的英语表达及计算。已知两个角为 30 degrees(30 度)和 60 degrees(60 度),180 - 30 - 60 = 90 degrees,所以答案是 C。A 选项 70 degrees(70 度)、B 选项 80 degrees(80 度)、D 选项 100 degrees(100 度)均不符合。
Two angles are complementary. One angle is 30 degrees. What is the measure of the other angle? A. 60 degrees B. 45 degrees C. 30 degrees D. 150 degrees 相关知识点: 试题来源: 解析 A。互补角之和为 90 度,一个角为 30 度,另一个角为 90 - 30 = 60 度。
A triangle has angles of 30 degrees, 60 degrees, and 90 degrees. What is the ratio of the sides opposite these angles? A. 1:sqrt(3):2 B. 1:2:sqrt(3) C. 2:1:sqrt(3) D. sqrt(3):1:2 相关知识点: 试题来源: 解析 A。解析:在 30-60-90 三角形中,对应边的比例是 1:sqrt(3...
结果1 题目 A triangle has angles of 30 degrees, 60 degrees, and 90 degrees. What is the sum of the angles? A. 120 degrees B. 180 degrees C. 210 degrees D. 240 degrees 相关知识点: 试题来源: 解析 B。本题考查三角形内角和的知识表达。三角形内角和是 180 度。A 反馈 收藏 ...
80 degrees C. 90 degrees D. 100 degrees 相关知识点: 试题来源: 解析 C。本题考查三角形内角和为 180 度的数学知识以及英语表达。已知三角形两个角分别是 30 度和 60 度,那么第三个角 x 的度数就是 180 减去 30 再减去 60 等于 90 度。A 选项 70 度,计算错误;B 选项 80 度不对;D 选项 100...
A triangle has angles of 30 degrees, 60 degrees, and 90 degrees. What is the ratio of the sides opposite these angles? A. 1:2:3 B. 1:√3:2 C. 2:3:4 D. 3:4:5 相关知识点: 试题来源: 解析 B。直角三角形中,30 度、60 度、90 度所对边的比例为 1:√3:2。A 选项 1:2:3...
A. 70 degrees B. 80 degrees C. 90 degrees D. 100 degrees 相关知识点: 试题来源: 解析 C。本题考查三角形内角和为 180 度的知识以及英语表达。180-30-60=90 度。A 选项 70 度错误;B 选项 80 度错误;D 选项 100 度错误。反馈 收藏
A right angle is divided into two angles. One of the angles is 35 degrees. What is the measure of the other angle? A. 55 degrees B. 65 degrees C. 45 degrees D. 35 degrees 相关知识点: 试题来源: 解析 A。直角为 90 度,一个角是 35 度,那么另一个角是 90 - 35 = 55 度。选...