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...
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...
Angles on a straight line Alternate angles 5. Multiple Choice 3 mins 1 pt Corresponding angles Angles at a point at up to360°360
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 perpendicular 5.2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...
3)Reflex:Areanglesbetween180°and360° NamingAngles -Wheretheraysmeet(vertex)givesthemiddleletteroftheanglename e.g.Namethefollowingangles a)C b)X B ABCorCBA XYZorZYX AMeasuringAngles e.g.Measurethefollowingangles Y Z Makesureyoureadfromthescalestartingfrom0ontheline!a)b)X C BABC=43° Y ...
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...
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, it is an acute angle. If the second line of the angle does not lie within the ruler, it is an obtuse angle. ...
To help you remember: the angle pairs are Consecutive (they follow each other), and they are on the Interior of the two crossed lines.Parallel LinesWhen the two lines being crossed are Parallel Lines the Consecutive Interior Angles add up to 180°....
line segment is perpendicular to two different lines or line segments, then those two lines or line segments are parallel. This is actually just another example of parallel lines being cut by a transversal (in this case, the transversal is perpendicular to the parallel lines), but it is a ...
Types of angles can be based on the angles formed when a transversal cuts two parallel linesWhen two parallel lines are crossed by a third line (Transversal), 8 angles are formed. Take a look at the following figure.Angles 3,4,5,8 are interior anglesAngles 1,2,6,7 are exterior angles...