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submitted topics: 67

Basic notions in geomerty (1997 views)
Adjacent and vertical angles. Triangle (2158 views)
Angles formed by crossing lines (2126 views)
Angle sum in a tringle . Exterior angle (1789 views)
Equal triangles (2088 views)
Isosceles and equalateral triangles (2064 views)
Right triangle with angle 30° (2419 views)
Right triangle and angle bisector (1979 views)
Bisection (1860 views)
Median in right triangle (4038 views)
Inequalities in triangle (1641 views)
Conscptions with line and trammel (1620 views)
Parallelogram (2638 views)
Rectangle (1710 views)
Rhombus (5196 views)
Square (1698 views)
Identities in plane (1717 views)
Axis symmetry (2580 views)
Map of set in set (1591 views)
Central symmetry (7532 views)
Rotation (1739 views)
Proportional segments (11535 views)
Translation (2083 views)
Similar triangles. Signs (2998 views)
Areas on similarity triangles (1599 views)
Thales' theorem (3561 views)
Angle bisector's characterics (2310 views)
Chava's theorem and Menalay's theorem (2121 views)
Dependences between segments in circum (1955 views)
Homothety-definition, characteristics (3848 views)
Similarity (1936 views)
Pythagoras' theorem (2206 views)
Trigonomerty in right triangle (4134 views)
Mutual position on circumferences (4230 views)
Polyhedral (1670 views)
Axioms in geometry (3786 views)
Mutual position on two lines (4075 views)
Line and plane which are perpendicular (1489 views)
Parallel and orthogonal projection (2786 views)
Distance from a point trough a plane (2488 views)
Angle between a line and a plane (3006 views)
Line which is parallel on a plane (1679 views)
Parallel planes (1756 views)
Dihedral Angle (3752 views)
Perpendicular planes (1639 views)
Trihedral angle (11106 views)
Prism. Parallelepiped (4472 views)
Pyramid (3118 views)
Parallel intersections (1575 views)
Vector bases (2207 views)
Central and inscribed angle (2907 views)
Angles which rays cross circumference (2307 views)
Circumscribed circum around triangle (2945 views)
Inscribed circumference in triangle (5062 views)
Remarkable points in triangle (2504 views)
Quadrangle - inscribed in circumference (3497 views)
Quadrangle-discribed over circumference (2086 views)
Stright circular cylinder (1679 views)
Stright circular cone (1693 views)
Intersected cone (1924 views)
Sphere (2138 views)
Ball (1860 views)
Combinations of rotary bodies (1596 views)
An equation on a line (1919 views)
Cartesian equation on a line (5614 views)
Mutual position of two straight lines -2 (3684 views)
Curves from second exponent (2860 views)