

Online Math: Geometry: Parallel Lines, Theorems and Problems


Parallel Lines, Page 1




Parallelogram. Theorems and Problems.
It
is a quadrilateral whose opposite
sides are parallel. 

Rectangle. Theorems and Problems Index. 

Rhombus.


Meanings and syntactic of 'PARALLEL'.
Created using Wordflex Touch Dictionary for iPad in association with Oxford University Press. 

Drawing parallels in geometry.
Mikhail Gromov has been awarded the Abel Prize for his work making sense
of the range of geometries that appeared in the 19th century and he is a
worthy successor to the likes of Euclid, Riemann and Gauss, Bolyai and
Lobachevsky. 

Geometry in the Real World: Griffith Observatory,
L.A. and Parallel Lines. 

Geometry Problem 1139.
Triangle, Circumcircle, Angle Bisector, Parallel Lines, 90 Degrees, Concurrent Lines. 

Geometry Problem 1135.
Intersecting Circles, Secant, Parallel Line, 90 Degrees, Similar Triangles. 

Geometry Problem 1132.
Triangle, Excircle, Tangency Point, Parallel, Midpoint. 

Geometry Problem 1129.
Isosceles Triangle, Circumcenter, Incenter, Parallel Lines, Perpendicular Lines. 

Geometry Problem 1128.
Right Triangles, Medians, Parallel, Angles, Congruence, Half the measure. 

Geometry Problem
1117.
Right Triangle, Angle Trisection, 90 Degrees, Parallel Lines. 

Geometry Problem
1101.
Triangle, Parallel Lines, Circle, Incircle, Inradius, Radius, Angle. 

Geometry Problem
1087.
Tangent Circles, Parallel, 15 Degrees, Angle. 

Geometry Problem
1084.
Circle, Chord, Radius, Diameter, Parallel lines, 45 Degrees, Metric Relations. 

Geometry Problem
1071.
Arbelos, Semicircles, Diameter, Circle, Perpendicular, Common Tangent, Parallel, Collinear Points, 90 Degrees,
Midpoint. 

Geometry Problem
1047.
Parallelogram, Parallel Lines, Concurrent Lines, Diagonals. 

Geometry Problem
1039.
Isosceles Triangle, Circle, Tangent Line, Parallel Line. 

Geometry Problem
1031.
Trapezoid, Intersecting Circles, Common Chord, Tangent Line, Midpoint, Parallel Lines. 

Geometry Problem
1030.
Quadrilateral, Triangle, Area, Midpoint, Parallel lines. 

Geometry Problem
1011.
Triangle, Angle Bisector, Vertex, Circle, Center, Radius, Parallel Lines. 

Geometry Problem
1002.
Triangle, Circumcircle, Cevian, Parallel Lines, Cyclic Quadrilateral, Concyclic Points. 

Geometry Problem 997.
Equilateral Triangle, Vertices, Three Parallel Lines, Distance, Metric Relations. 

Geometry Problem 995.
Quadrilateral, Perpendicular Diagonals, Perpendicular Bisector, Parallel. 

Geometry Problem 994.
Trapezoid, Midpoints of the bases, Concurrent Lines. 

Geometry Problem 990.
Triangle, Incircle, Median, Cevian, Central Angle, Congruence, Circle, Secant, Midpoint,
Parallel. 

Geometry Problem 987.
Triangle, Circumcircle, Incenter, Chord, Parallel, Circle, Tangent. GeoGebra, HTML5 Animation for Tablets (iPad, Nexus). 

Geometry Problem 980.
Equilateral Triangle, Vertices, Three Parallel, Equal Circles, Construction. 

Geometry Problem 973.
Three Parallel, Square, Vertices, Distance Between Two Parallel Lines, Side, Metric Relations. 

Geometry Problem 972.
Equilateral Triangle, Vertices, Three Parallel, Equal Circles, Perpendicular Bisector. 

Geometry Problem 951.
Intersecting Circles, Chord, Diameter, Parallel, Cyclic Quadrilateral, Concyclic Points. 

Geometry Problem 947.
Triangle, Circumcircle, Angle Bisector, Chord, Arc, Parallel. 

Geometry Problem 946.
Triangle, Quadrilateral, Area, Diagonal, Midpoint, Parallel. 

Geometry Problem 944.
Triangle, Orthocenter, Altitude, Perpendicular, 90 Degrees, Parallel Lines. 

Geometry Problem 943.
Triangle, Incircle, Inscribed Circle, Tangency Points, Parallel, Metric Relations. 

Geometry Problem 940.
Circle, Tangent, Secant, Chord, Parallel, Perpendicular, 90 Degrees, Midpoint. 

Geometry Problem 939.
Circle, Tangent, Secant, Chord, Parallel, Midpoint. 

Geometry Problem 925.
Cyclic Quadrilateral, Diagonal, Circle, Angle Bisector, Parallel.


Geometry Problem 919.
Rhombus, Triangle, Perpendicular, 90 Degrees, Congruence.


Geometry Problem 914.
Triangle, Orthocenter, Angle Bisector, Parallel Lines, Midpoint.


Geometry Problem 895
Triangle, Incircle, Tangency Points, Parallel line, Collinear Points.
GeoGebra, HTML5 Animation for Tablets 

Geometry Problem 894
Triangle, Angle, 60 degrees, Incenter, Midpoint, Parallel Lines.
GeoGebra, HTML5 Animation for Tablets 

Geometry Problem 865
Parallelogram, Diagonal, Midpoint, Side, Triangle, Parallel, Similarity. 

Geometry Problem 863
Circumscribed trapezoid, Inscribed Circle, Tangent, Metric Relations. 

Geometry Problem 862:
Trapezoid, Parallel, Equal Areas, RMS, Root Mean Square
. 

Geometry Problem 861
Triangle, Incircle, Parallel, Tangent, Metric Relations. 

Geometry Problem 860
Triangle, Three Medians, Parallel, Parallelogram, Area, Congruence. 

Geometry Problem 829
Triangle, Circumcircle, Parallel, Chord, Side, Metric Relations. 

Geometry Problem 854
Triangle, Parallel lines, Parallelogram, Areas, Similarity, Concurrent lines. 

Geometry Problem 799
Parallelogram, Angle Bisector, Parallel, Triangle, Circumcircle, Circumcenter. 

Geometry Problem 798
Parallelogram, Secant Line, Tangent Circles, Circumcircles, Triangle. 

Geometry Problem 797
Parallelogram, Angle Bisector, Isosceles and Similar Triangles. 
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Email  By Antonio Gutierrez
Last updated: Jul 17, 2015






