单选题In the figure below, what is the value of a?A15°B25°C30°D45°E115°

单选题
In the figure below, what is the value of a?
A

15°

B

25°

C

30°

D

45°

E

115°


参考解析

解析:
已知上部倒三角形的两个内角分别为40°和25°,所以第三个角的度数180°-40°-25°=115°,所以与此角相对的下部三角形的角为115°,因此,a=180°-50°-115°=15°。

相关考题:

小儿的合理膳食中,蛋白质、脂肪、糖类3种营养素供能比例应为:蛋白质(%)脂肪(%)糖(%)A、12%~15% 30%~40% 40%~50%B、10%~15% 25%~30% 50%~60%C、10%~15% 25%~35% 45%~55%D、10%~10% 30%~40% 40%~50%E、15%~25% 25%~35% 45%~55%

●What is the decimal value of the binary value 10010? (70) .(70) A.18B.20C.14D.15

下列四个序列中,哪一个是堆()。A、75,65,30,15,25,45,20,10B、75,65,45,10,30,25,20,15C、75,45,65,30,15,25,20,10D、75,45,65,10,25,30,20,15

I can’t _________ what he was hinting at.A、figureB、figure outC、figure upD、figure at

What is the default value of the IS-IS lsp-refresh-interval command?() A. 60 secondsB. 5 minutesC. 15 minutesD. 30 minutes

下列四个序列中,()是堆。A.75,65,30,15,25,45,20,10B.75,65,45,10,30,25,20,15C.75,45,65,30,15,25,20,10D.75,45,65,10,25,30,20,15

生活饮用水水样采集容器高压蒸气灭菌要求( )。A.115℃ 20~30分钟B.115℃ 45~60分钟C.121℃ 15~20分钟D.121℃ 30~45分钟E.135℃ 10~15分钟

斜齿圆柱齿轮斜角β的范围在()。A、8°~15°B、15°~25°C、25°~30°D、30°~45°

生活饮用水水样采集容器高压蒸气灭菌要求()。A、115℃20~30分钟B、115℃45~60分钟C、121℃15~20分钟D、121℃30~45分钟E、135℃10~15分钟

根据(大顶)堆积的定义,下面给出的四个序列中,()是一个堆积。A、75,45,65,30,15,25,20,10B、75,65,45,10,30,25,20,15C、75,65,30,15,25,45,20,10D、75,45,65,10,25,30,20,15

三大产能物质蛋白质:脂肪:碳水化合物的比例是()。A、20%~25%:25%~30%:50%~60%B、10%~15%:20%~35%:50%~60%C、10%~25%:25%~30%:50%~60%D、10%~15%:25%~40%:50%~60%E、15%~25%:30%~45%:45%~60%

下列四个序列中,()是堆。A、75,65,30,15,25,45,20,10B、75,65,45,10,30,25,20,15C、75,45,65,30,15,25,20,10D、75,45,65,10,25,30,20,15

小儿的合理膳食中,蛋白质、脂肪、糖类3种营养素供能比例应为:蛋白质(%)脂肪(%)糖(%)()A、12%~15%30%~40%40%~50%B、10%~15%25%~30%50%~60%C、10%~15%25%~35%45%~55%D、10%~15%30%~40%40%~50%E、15%~25%25%~35%45%~55%

What is the default value of the IS-IS lsp-refresh-interval command?()A、60 secondsB、5 minutesC、15 minutesD、30 minutes

单选题In the correctly worked out addition example below, what is the greatest possible value of digit B?A9B8C6D5E4

单选题In the figure below, a small circle, with radius x, is inside a larger circle, with radius 6. What is the area, in terms of x, of the shaded region?A6π-2πxB6π-πx2C12π-2πxD36π-2πxE36π-πx2

单选题For what value of a is a Φ 4 = 24?A3B4C6D25/4E8

单选题小儿的合理膳食中,蛋白质、脂肪、糖类3种营养素供能比例应为:蛋白质(%)脂肪(%)糖(%)()A12%~15%30%~40%40%~50%B10%~15%25%~30%50%~60%C10%~15%25%~35%45%~55%D10%~15%30%~40%40%~50%E15%~25%25%~35%45%~55%

单选题斜齿圆柱齿轮斜角β的范围在()。A8°~15°B15°~25°C25°~30°D30°~45°

单选题根据(大顶)堆积的定义,下面给出的四个序列中,()是一个堆积。A75,45,65,30,15,25,20,10B75,65,45,10,30,25,20,15C75,65,30,15,25,45,20,10D75,45,65,10,25,30,20,15

单选题What is the default value of the IS-IS lsp-refresh-interval command?()A60 secondsB5 minutesC15 minutesD30 minutes

单选题三大产能物质蛋白质:脂肪:碳水化合物的比例是()。A20%~25%:25%~30%:50%~60%B10%~15%:20%~35%:50%~60%C10%~25%:25%~30%:50%~60%D10%~15%:25%~40%:50%~60%E15%~25%:30%~45%:45%~60%

问答题In the figure below, what is the value of x?

单选题If 5/x+4/5=1, what is the value of x?A-25/4B-4C-5/4D-1/5E25

单选题If the measures of the angles of a triangle are in the ratio of 2:3:4, what is the measure of the smallest angle of the triangle?A20B25C30D40E45

单选题下列四个序列中,()是堆。A75,65,30,15,25,45,20,10B75,65,45,10,30,25,20,15C75,45,65,30,15,25,20,10D75,45,65,10,25,30,20,15

单选题If the average (arithmetic mean) of a, b, 4, and 10 is 8, what is the value of a + b?A4B6C9D15E18