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Discovering Angles
Haley Meadows
4th hour white.
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Complimentary Angles
two angles whose sum is a right angle.
The picture to the top right is a Complimentary Angel
Because it’s angles add up to 90°. Not all complimentary
Angels have to be together. The picture to the bottom
Right is an example of a complimentary angel that is
Not together, however their angels add up to 90°.
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Linear pairs
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The two supplementary adjacent angels formed by two
intersecting lines.
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The picture to the right is of a linear pair. The
intersecting lines make it a linear pair.
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Alternate Exterior Angles
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When two lines are cut by another line (transversal), the
pairs of angles formed outside the two lines and on the
opposite of the transversal are called Alternate Exterior
Angles
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The picture to the left show an alternate
angel . <2, <8, <7,and <1 are all
Alternate exterior angles. AB, CD, and EF
are all examples of transversal angels.
exterior
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Perpendicular Lines
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two lines or planes (or a line and a plane), are considered
perpendicular (or orthogonal) to each other if they form
congruent adjacent angles (an L-shape). The term may be
used as a noun or adjective.
the picture to the left is an
example of perpendicular
lines because they cross in the
center. And they form
congruend adjacent angles (an
L-shape) in each side of the
shape.
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Supplementary Angles
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Two Angles are Supplementary if they add up to 180
degrees.
The picture to the right shows a
supplementary angle because
the angles add up to 180°
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Transversals
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A transversal of two lines lying in the same plane is a
line which intersects the in two different points.
The picture to the right is a
transversal angel because it
intersects at point G, E, and F.
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Corresponding Angles
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Corresponding angles are formed when a given transversal
line crosses two parallel lines. The corresponding angles are
not necessarily congruent, but they are if the coplanar lines
are also parallel. ...
B
Lines B and C are the
Parallel lines and line A is
the line that crosses the
two parallel lines.
A
C
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Right Angles
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A right angle is an internal angle which is equal to 90°
Because the angles add up
to 90° it is a right angle.
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Vertical Angles
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vertical Angles are the angles opposite each other when two
lines cross
The angles A and
B are opposite of
each other and the
lines cross.
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Alternate Interior Angles
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When two lines are crossed by another line
Both lines are crossed by
line f.
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Parallel Lines
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Lines are parallel if they are always the same distance apart
and never touch.
These lines are
always the same
distance apart and
will never touch.
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Citation
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http://www.mathsisfun.com/geometry/complementary-angles.html
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http://www.allwords.com/word-linear+pair.html
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http://www.icoachmath.com/SiteMap/AlternateExteriorAngles.html
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http://www.proofwiki.org/wiki/Definition:Transversal_(Geometry)
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http://www.google.com/search?hl=en&safe=active&client=safari&rls=en&defl=en&q=
define:Corresponding+angles&sa=X&ei=ZYNZTaiWIYGBlAfpnfShBw&ved=0CBMQkAE
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http://www.mathsisfun.com/rightangle.html
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http://www.mathsisfun.com/geometry/vertical-angles.html
http://www.mathsisfun.com/geometry/alternate-interiorangles.html
http://www.mathsisfun.com/geometry/parallel-lines.html