Exercice 5 Partie 1
Calculer en justifiant la mesure des angles : CAD et CDA
B
45
432
35,35
Partie 2
1) donner la valeur de BD 92
2) montrer que AD = V50
3) montrer que AC = 50
3) calculer la valeur exacte de CD
30
Partie 3
Vérifier que x est la différence entre les périmètres des triangles ABC et ABD
Partie 4
1) Donner la valeur exacte de l'aire de ABD puis celle de ACD
2) Compléter avec la valeur exacte puis approchée : aire de ABD =
X aire de ACD​

Part a what is the area of triangle i? show your calculation. part b triangles i and ii are congruent (of the same size and shape). what is the total area of triangles i and ii? show your calculation. part c what is the area of rectangle i? show your calculation. part d what is the area of rectangle ii? show your calculation. part e rectangles i and iii have the same size and shape. what is the total area of rectangles i and iii? show your calculation. part f what is the total area of all the rectangles? show your calculation. part g what areas do you need to know to find the surface area of the prism? part h what is the surface area of the prism? show your calculation. part i read this statement: “if you multiply the area of one rectangle in the figure by 3, you’ll get the total area of the rectangles.” is this statement true or false? why? part j read this statement: “if you multiply the area of one triangle in the figure by 2, you’ll get the total area of the triangles.” is this statement true or false? why?