If an angle measures 180 degrees, what is it? A. Acute angle B. Right angle C. Obtuse angle D. Straight angle 相关知识点: 试题来源: 解析 D。180 度的角是平角,选 D。选项 A 锐角小于 90 度,选项 B 直角是 90 度,选项 C 钝角大于 90 度小于 180 度。反馈 收藏 ...
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 = 90 度。反馈 收藏 ...
An angle is 30 degrees more than its supplementary angle. What is the angle? A. 75 degrees B. 105 degrees C. 135 degrees D. 150 degrees 相关知识点: 试题来源: 解析 B。设这个角为 x 度,其补角为 180 - x 度。由题意得 x = 180 - x + 30,解得 x = 105 度。
What is the measure of a straight angle? A. 90 degrees B. 180 degrees C. 360 degrees D. 270 degrees 相关知识点: 试题来源: 解析 B。解析:straight angle 是平角,平角的度数是 180 度。选项 A90 度是直角的度数;选项 C360 度是周角的度数;选项 D270 度不是平角的度数。
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. 60 degrees B. 180 degrees C. 30 degrees D. 240 degrees 相关知识点: 试题来源: 解析 A。本题考查补角的概念。互为补角的两个角之和为 180 度,已知角为 120 度,所以其补角为 180 - 120 = 60 度。反馈 收藏
If an angle is 60 degrees and another angle is 30 degrees, what is the sum of these two angles? A. 80 degrees B. 90 degrees C. 100 degrees D. 120 degrees 相关知识点: 试题来源: 解析 B。解析:60 度加 30 度等于 90 度,这道题考查角度加法的基本运算,需要注意计算准确。
The ramp has an angle of 30 degrees. What is the meaning of “angle” in this case? A. gradient B. speed C. distance D. time 相关知识点: 试题来源: 解析 A。“angle”在这种情况下指的是坡度,选项 A“gradient”有坡度的意思;选项 B“speed”是速度;选项 C“distance”是距离;选项 D“...
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。
If one angle is 80 degrees, what is the measure of its adjacent angle? A. 80 degrees B. 100 degrees C. 180 degrees D. 20 degrees 相关知识点: 试题来源: 解析 B。平行四边形的邻角互补,和为 180 度。已知一个角为 80 度,其邻角 = 180 度 - 80 度 = 100 度。反馈 收藏 ...