Category:Triangles
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This category contains results about Triangles in the context of Geometry.
Definitions specific to this category can be found in Definitions/Triangles.
Subcategories
This category has the following 24 subcategories, out of 24 total.
A
B
C
E
F
H
I
L
M
O
P
R
S
Pages in category "Triangles"
The following 83 pages are in this category, out of 83 total.
A
C
- Ceva's Theorem
- Circumscribing about Circle Triangle Equiangular with Given
- Circumscribing Circle about Triangle
- Congruence of Triangles is Equivalence Relation
- Construction of Parallelogram equal to Triangle in Given Angle
- Construction of Parallelogram on Given Line equal to Triangle in Given Angle
- Construction of Triangle from Given Lengths
- Converse Hinge Theorem
- Crossbar Theorem
E
- Equal Sized Triangles on Equal Base have Same Height
- Equal Sized Triangles on Same Base have Same Height
- Equiangular Triangles are Similar
- Euler Triangle Formula
- Euler Triangle Formula/Lemma
- Every Triangle has 2 Equal Sides
- External Angle of Triangle equals Sum of other Internal Angles
- External Angle of Triangle Greater than Internal Opposite
G
L
- Law of Cosines
- Law of Sines
- Law of Tangents
- Law of Tangents/Corollary
- Length of Angle Bisector
- Length of Circumradius of Triangle
- Length of Inradius of Triangle
- Line Parallel to Side of Triangle which Bisects One Side also Bisects Other Side
- Lines Through Endpoints of One Side of Triangle to Point Inside Triangle is Less than Sum of Other Sides
- Lines Through Endpoints of One Side of Triangle to Point Inside Triangle is Less than Sum of Other Sides/Corollary
M
P
S
- SAA
- SAS
- Sides of Equiangular Triangles are Reciprocally Proportional
- Similar Figures on Sides of Right-Angled Triangle
- Similar Polygons are composed of Similar Triangles
- Similar Polygons are composed of Similar Triangles/Porism
- Sine of Angle of Triangle by Semiperimeter
- Square equals Sum of Squares implies Right Triangle
- SSS
- Steiner-Lehmus Theorem
- Stewart's Theorem
- Sum of Angles of Triangle equals Two Right Angles
- Sum of Two Sides of Triangle Greater than Third Side
T
- Triangle Angle-Side-Angle and Side-Angle-Angle Equality
- Triangle Angle-Side-Angle and Side-Angle-Angle Equality/Proof
- Triangle Angle-Side-Angle Equality
- Triangle Equality
- Triangle Side-Angle-Angle Equality
- Triangle Side-Angle-Side Equality
- Triangle Side-Side-Side Equality
- Triangles with One Equal Angle and Two Other Sides Proportional are Similar
- Triangles with One Equal Angle and Two Sides Proportional are Similar
- Triangles with Proportional Sides are Similar
- Triangles with Two Equal Angles are Similar
- Triangles with Two Sides Parallel and Equal
- Two Angles of Triangle Less than Two Right Angles
