Geometry Triangles and circles Concept
Angle at a point
Summary
The angle at the point is the opening between the rays from through and from through . It is a number from to , and it does not depend on the order of the two rays.
Where this leads
23 pages build on this one.
- Isosceles triangle theorem
- Angle sum of a triangle
- Law of cosines
- Angle bisector theorem
- Inscribed angle theorem
- Angles in the same segment are equal
- Thales's theorem
- Exterior angle theorem
- Angle-angle similarity
- Law of sines
- Regular polygon
- Pythagorean theorem
- Saccheri–Legendre theorem
- Non-Euclidean geometry
- Parallel postulate
- Congruence criteria for triangles
- Hyperbolic law of cosines
- Euclid's Elements
- Birkhoff's axioms
- Lambert quadrilateral
- Angle of parallelism
- Saccheri quadrilateral
- Morley's trisector theorem
Further reading
- Web https://en.wikipedia.org/wiki/Angle, lead section
About this page
| Tag | 0GJAJC6TNZ |
|---|---|
| URI | m2://0GJAJC6TNZ |
| Aliases | unoriented-angle |
| Kind | concept |
| Writing | W0 stub |
| MSC | 51M05 |
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What links here
Used by
- Isosceles triangle theorem
- Angle sum of a triangle
- Law of cosines
- Angle bisector theorem
- Inscribed angle theorem
- Thales's theorem
- Exterior angle theorem
- Angle-angle similarity
- Law of sines
- Regular polygon
- Pythagorean theorem
- Saccheri–Legendre theorem
- Parallel postulate
- Congruence criteria for triangles
- Birkhoff's axioms
- Lambert quadrilateral
- Angle of parallelism
- Saccheri quadrilateral
- Morley's trisector theorem