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Online Geometry: Circles, Theorems and Problems

Circles - Table of Content (Page 17)

Circles

 

Elearning 197: Triangle Area

Proposed Problem 197. Area of a Triangle, Side, Inradius, and Exradius.

Elearning 196: Inradius, Exradii

Proposed Problem 196. Triangle, Inradius and Exradii Formula.

Geometry: Triangle Area, inradius, exradii

Proposed Problem 195. Area of a Triangle, Inradius, Exradii.

Area of a triangle, semiperimeter, exradius

Proposed Problem 194. Area of a Triangle, Semiperimeter, Exradius.

Area of a triangle, semiperimeter, inradius

Proposed Problem 193. Area of a Triangle, Semiperimeter, Inradius.

Geometry Problem Circle, Diameter, and Chord

Proposed Problem 192. Circle, Diameter, Chord, Perpendicular, Triangle, Area.

Elearning 190 tangent circles, chord, perpendicular

Proposed Problem 190. Tangent circles, Tangent chord, Perpendicular, Distance.

Elearning 187: Right triangle, incircles, angles

Proposed Problem 187. Right Triangle, Altitude, Incenters, Circles, Angles.

Elearning 186: Right triangle, circles

Proposed Problem 186. Right Triangle, Altitude, Incenters, Circles.

Overlapping circles, Angle

Proposed Problem 182. Overlapping Circles, Find an angle.

Circular Sector 90 degree

Proposed Problem 181. Circular Sector of 90 degrees, find an angle.

Circle tangent externally, trapezoid, area

Proposed Problem 180. Circles Tangent Externally, Common External Tangents, Areas.

Elearning: Triangle, Circle, Incircle, Radius

Proposed Problem 160. Triangle, Incircle, Incenter, Circumcircle, Circumcenter, Inradius.

Triangle Elearning 159

Proposed Problem 159. Distances from the Circumcenter to the Incenter and the Excenters.

Geometry Problem 158

Proposed Problem 158. Relation between the Circumradius, Inradius and Exradii of a triangle.

Elearning triangle 157

Proposed Problem 157. Distance from the Circumcenter to the Excenter.

Elearning triangle 156

Proposed Problem 156. Triangle, Circumradius, Exradius, Chord, Secant line.  

Elearning 155

Proposed Problem 155. Euler's Theorem: Distance from the Incenter to the Circumcenter.  

Elearning 154

Proposed Problem 154. Triangle, Inradius, Circumradius, Chord.  

Circumscribed quadrilateral

Proposed Problem 153. Circumscribed Quadrilateral, Diagonals Concurrent with Chords.  

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