en.wikipedia.org/wiki/Isosceles_triangle

The theorem which states that the base angles of an isosceles triangle are equal appears as Proposition I.5 in ...

www.varsitytutors.com/hotmath/hotmath_help/topics/isosceles-triangle-theorem

Isosceles Triangle Theorem. If two sides of a triangle are congruent , then the angles opposite to these sides are congruent. ∠P≅∠Q. Proof: Let S be the ...

www.mathwarehouse.com/geometry/congruent_triangles/isosceles-triangle-theorems-proofs.php

Proofs involving isosceles triangles often require special consideration because an isosceles triangle has several distinct properties that do not apply to normal ...

www.khanacademy.org/math/geometry/hs-geo-congruence/hs-geo-congruence-theorems/v/congruent-legs-and-base-angles-of-isosceles-triangles

Sal proves that the base angles in isosceles triangles are congruent, and conversely, that triangles with congruent base angles are ... They are all theorems.

proofsfromthebook.com/2013/05/12/the-isosceles-triangle-theorem

May 12, 2013 ... The Isosceles Triangle Theorem states that the angles opposite to the two congruent sides of an isosceles triangle are congruent. In the figure ...

www.math.washington.edu/~king/coursedir/m444a04/notes/02-PropertiesIsosTriangle.html

Theorem: Let ABC be an isosceles triangle with AB = AC. Let M denote the midpoint of BC (i.e., M is the point on BC for which MB = MC). Then. a) Triangle ABM ...

www.sonoma.edu/users/w/wilsonst/Courses/Math_150/Theorems/Isosceles/default.html

If two sides in a triangle are congruent, then the angles opposite the congruent sides ... (The Isosceles DecompositionTheorem) In an isosceles triangle, if a line ...

www.dummies.com/education/math/geometry/using-the-isosceles-triangle-theorems-to-solve-proofs

The following two theorems — If sides, then angles and If angles, then sides — are based on a simple idea about isosceles triangles that happens to work in ...

brilliant.org/wiki/isosceles-triangle-theorem

An isosceles triangle is a triangle that has two equal sides. The isosceles triangle theorem states the following: This theorem gives an equivalence relation.