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
A Look at the Education System. The education before 6 years is termed as pre-primary education or kindergarten education and is divided into two groups. First is up to 3 years and the second is from 3 to 6 years of age. From 6 to 16 years of age, the education in Spain is divided into two groups. 1) The first group, called primary education, is for students between the ages of 6 and 12. 2) 12 to 16 years ( called secondary education) The primary education is divided into three cycles 1) 6 to 8 years (first cycle) 2) 8 to 10 years (second cycle) 3) 10 to 12 years (third cycle) During this stage, the average number of students in a class is around 25 in the Spanish schools.