Related terms:
cosh
nasir
axiom
euclid
teorema
saccheri
collinear
trapezoid
converse
congruent
congruence
hypotenuse
right angle
pentagram
hyperbolic
trigonometry
golden ratio
law of cosines
right triangle
angle opposite
exterior angle
trigonometric
quadrilateral
golden triangle
isosceles triangle
parallel postulate
pythagorean triples
pythagorean theorem
euclidean geometry
hyperbolic geometry
Wikipedia sources:
Law of cosines
Triangle
Angle
Pentagram
Golden ratio
Parallel postulate
Pythagorean theorem
History of geometry
Context for words:
obtuse
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