Of course, the main property of isosceles triangles is their two congruent sides. All isosceles triangles also have base angles that are congruent. Again, this property holds true for all isosceles triangles, no matter which direction their apex points.
In France, children start school at three years old (although it is not compulsory until six years old). A comparison between my daughter (educated in France) and her cousin (in the UK) at exactly 4 yrs 9 1/2 months old showed that a British education gives kids the tools they need to read and write much more quickly. Sarah, Apt, France
[1] In order to achieve the goal by 2015, the United Nations estimates that all children at the official entry age for primary school would have had to be attending classes by 2009. This would depend on the duration of the primary level as well as how well the school schools retain students until the end of the cycle.