The measure of an angle is 90 degrees. What is it called? A. Acute angle B. Right angle C. Obtuse angle D. Straight angle 相关知识点: 试题来源: 解析 B。90 度的角被称为直角,选 B。选项 A 锐角小于 90 度,选项 C 钝角大于 90 度小于 180 度,选项 D 平角是 180 度。
If the measure of an angle is 120 degrees, what is the measure of its supplementary angle? 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...
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。
What is the name of the side opposite the 90-degree angle? A. hypotenuse B. base C. height D. side 相关知识点: 试题来源: 解析 A。直角三角形中直角所对的边叫斜边,即 hypotenuse。B 选项 base 是底边,C 选项 height 是高,D 选项 side 是边,都不是直角所对的边。反馈 收藏 ...
If one angle is 100 degrees, what is the measure of the other angle? A. 80 degrees B. 90 degrees C. 70 degrees D. 60 degrees 相关知识点: 试题来源: 解析 A。两个角的和是 180 度,其中一个角是 100 度,那么另一个角就是 180 - 100 = 80 度。反馈 收藏 ...
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 ...
One angle is 45 degrees. What is the measure of the other angle? A. 90 degrees B. 60 degrees C. 180 degrees D. 45 degrees 相关知识点: 试题来源: 解析 A。两个角的和是 135 度,一个角是 45 度,那么另一个角是 135 - 45 = 90 度。选项 B 60 度错误;选项 C 180 度错误;选项 ...
Observe the parallelogram. 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...
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...
The roof has an angle of 60 degrees. What is the meaning of “angle” in this context? A. length B. width C. height D. slant 相关知识点: 试题来源: 解析 D。“angle”在这个语境中的意思是倾斜度,选项 A“length”是长度;选项 B“width”是宽度;选项 C“height”是高度。只有选项 D“...