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 ...

en.wikipedia.org/wiki/Pons_asinorum

In geometry, the statement that the angles opposite the equal sides of an
isosceles triangle are .... The **isosceles triangle theorem** holds in inner product
spaces over the real or complex numbers. In such spaces, it takes a form that
says of ...

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 triangle**s 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**.

mathworld.wolfram.com/IsoscelesTriangle.html

An **isosceles triangle** is a triangle with (at least) two equal sides. ... of the
**isosceles triangle** illustrated above can be found from the Pythagorean **theorem**
as ...

web.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
...