垂直的;竖式的;纵的至高点的,顶点的___垂线垂线perpendicular line[͵pə:pən'dikjulə]adj.n.(与另一线或面)成直角的,垂直的,正交的(to)直立的,与水平线成直角的,陡峭的垂足foot of a perpendicular5.2平行线___平行线平行parallel['pærəlel]n.a.v.___直线平行的条件5.3平行线的性质命...
Acute angle What type of angle is this? Acute angle Obtuse angle Reflex angle Vertically opposite angles Corresponding angles Angles on a straight line Alternate angles 5. Multiple Choice 3 mins 1 pt Corresponding angles Angles at a point at up to360°360...
When parallel lines are crossed by another line (called a Transversal), special angle relationships appear.In this example, many angles are equal and form pairs of angles with unique names.Click on each name below to see it highlighted:
Hence, the angles on a straight line add up to 180∘180∘. Question 1:Look at the figure below:___ and ___ are acute angles.Solution: To identify if an angle is acute, we place a ruler on one of the lines of an angle.If the second line of the angle lies within the ruler...
Two lines in the same plane that do not intersect are calledparallel lines. The figure below shows two lines, and that are parallel, denoted by The two lines are intersected by a third line, forming eight angles. Note that four of the angles have the measurex°, and the remaining four...
Two lines are parallel. Another line intersects them. ___, the corresponding angles are equal. A. So B. But C. Or D. And 相关知识点: 试题来源: 解析 A。“So”在这里表示所以,根据平行线的性质,两直线平行被第三条直线所截,对应角相等。“But”转折错误。“Or”或者不合适。“And”连接并列...
Highways are usually made much easier to drive on, by making both sides fo the road follow the exact same straight line direction. We say that the edges of the road are “parallel” to each other. Highways also need to have the guard rails that run parallel to the surface level of the...
1.an angle formed between parallel lines by a third line that intersects them. 2.an angle formed within a polygon by two adjacent sides. Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved. ...
[plural](geometry) enlarge image equal angles formed on the same side of a line that crosses twoparallellinescomparealternate angles Definitions on the go Look up any word in the dictionary offline, anytime, anywhere with theOxford Advanced Learner’s Dictionaryapp. ...
If you candraw a Zor a'Backwards Z', then the alternate interior angles are the ones that are in the corners of theZ P¯¯¯¯P¯is parallel to lineV¯¯¯¯V¯ Directions:Identify the alternate interior angles.