[DOC] [TLE] Vertical Angles definition - Math Open Reference [PAR] Definition and properties of vertical (or opposite) angles. ... Definition: A pair of 
non-adjacent angles formed by the intersection of two straight lines. Try this Drag
... [DOC] [TLE] Right Angle - math word definition - Math Open Reference [PAR] Definition of an right angle (one whose measure is exactly 90 degrees). [DOC] [TLE] Horizontal - math word definition - Math Open Reference [PAR] In geometry, a horizontal line is one which runs from left to right across the page. 
It comes from the word 'horizon', in the sense that horizontal lines are parallel to... [DOC] [TLE] Mathwords: Angle of Inclination of a Line [PAR] This angle is always between 0 and 180, and is measured counterclockwise 
from the part of the x-axis to the right of the line. Note: All horizontal lines have... [DOC] [TLE] Right angle - Wikipedia [PAR] In geometry and trigonometry, a right angle is an angle that bisects the angle 
formed by two ... rectus means "upright", referring to the vertical perpendicular to 
a horizontal ... Euclid uses right angles in definitions 11 and 12 to define acute 
angles ... 40; Jump up ^ Unicode 5.2 Character Code Charts Mathematical 
Operators,... [DOC] [TLE] Angles of Inclination and Declination - Purplemath [PAR] Angles of elevation or inclination are angles above the horizontal, like looking up 
from ground level toward the top of a ... This means I can create and solve an 
equation: ... right triangle, base angle 2.4*, base / adjacent 1056, height / 
opposite... [DOC] [TLE] Angles of Elevation and Depression - Interactive Maths Series ... [PAR] The angle of elevation of an object as seen by an observer is the angle between 
the horizontal and the line from the object to the observer's eye (the line of sight)
... [DOC] [TLE] Perpendicular - definition of perpendicular by The Free Dictionary [PAR] Define perpendicular. perpendicular synonyms, perpendicular pronunciation, 
perpendicular ... (Mathematics) Also: normal at right angles to a horizontal plane. [DOC] [TLE] 4.5 Slope - Firefighter Math [PAR] Percentage means per 100. ... Sixty percent means 60 out of 100. ... There is a 
right angle if the vertical and horizontal distances are "true" to the vertical and... [DOC] [TLE] Right Triangle Trigonometry - Regents Exam Prep Center [PAR] Since trigonometry means "triangle measure", any profession that deals with ... in 
the diagram above of angle of depression, the dark black horizontal line is... [DOC] [TLE] Slope of a line - A complete course in algebra - The Math Page [PAR] x is the horizontal leg of that right triangle; y is the vertical leg. By the slope of a 
straight line, then, we mean this number: .... Angle CAD is a right angle. [DOC] [TLE] Angles of elevation and depression | Modeling with right triangles ... [PAR] Learn what the terms angle of elevation and angle of depression mean. ... a, t, i, o
, n, end color blueD between the horizontal and your line of sight to the object. [DOC] [TLE] Line of Sight | Line of Sight Distance | Math@TutorVista.com [PAR] The line of sight is a straight line along which an observer observes an object. ... 
If the object is below the horizontal, then the angle between the line of sight and 
the horizontal ... Step 1: Use the definition of the tangent to find the  A, we have [DOC] [TLE] Definition and Mathematics of Work - The Physics Classroom [PAR] Definition and Mathematics of Work; Calculating the Amount of Work Done by ... 
the force vector and the displacement vector are at right angles to each other. ... 
The horizontal component is found by multiplying the force F by the cosine of the
... [DOC] [TLE] The gradient of a straight line segment - Mathcentre [PAR] www.mathcentre.ac.uk. 1 ... In turn, this is steeper than AB which is horizontal. ... 
Remember that, in the right-angled triangle shown in ... What does that mean? [DOC] [TLE] Trigonometry - Word Problems - MathBitsNotebook(Geo - CCSS Math) [PAR] The situations you will be examining will be specifically related to right triangles, 
and

Question: In math it means at a right angle to the horizontal
Answer: perpendicular