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
If your son's school in La Paz has no links with any schools in France, you could always check with individual schools in France yourself, though this may take time. Public schools in France can be found from the website www.education.gouv.fr, however I would be surprised if a public school would take a child for 1-2 months with no exchange programme in place. Perhaps private schools might.