An angle is a figure formed by two rays that have a common endpoint. The extent of an angle is measured in degrees. Learn more about angles with the help of some solved examples.
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。
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 ...
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. 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。反馈...
Degrees and Radians are units measuring angles; while there are 360° in a circle, there are 2π radians.
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。反馈...
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...
What is the sum of these angles? A. 90 degrees B. 120 degrees C. 150 degrees D. 180 degrees 相关知识点: 试题来源: 解析 D。三角形内角和是 180 度。A 选项 90 度错误;B 选项 120 度不对;C 选项 150 度也不符合。反馈 收藏
Adjacent angles and vertical angles are the pair of angles, in geometry. Adjacent angles have common vertex and common arm. Vertical angles have common vertex. Learn how to solve adjacent angles with examples.