Explain what it is a neutral theorem
in Euclidean geometry.
State & prove both: the theorem...
Explain what it is a neutral theorem
in Euclidean geometry.
State & prove both: the theorem on construction of parallel
lines and its converse. Which one of them is neutral?
Prove the following problems using the complex plane model of
Euclidean geometry, in the spirit of Erlangen Program: 1. Prove
that the diagonals of a parallelogram bisect each other. 2. Prove
that the sum of the squares of the diagonals of a parallelogram is
equal to the sum of the squares of all the sides of the
parallelogram. 3. Prove the Cosine Law for triangles: In a triangle
with the sides a, b, and c, the square of the side...
Prove the following theorem:
In a Pasch geometry, a quadrilateral is a convex quadrilateral
if and only if the vertex of each angle is contained in the
interior of the opposite angle.
Prove the following for Euclidean Geometry. Provide general
dynamic illustrations in GeoGebra. You will have to break down your
illustrations and your proofs into 3 cases. Case 1: Both sides of
the angle are tangent to the circle. Case 2: Exactly one side of
the angle is tangent to the circle. Case 3: Neither side of the
angle is tangent to the circle.
Proposition 129. If an angle intercepts two arcs of a circle,
then the measure of the angle...