Quiz interactif : Maths 9ème année — Algèbre & Géométrie

Question 1 sur 10 10:00

[{"id":60437,"question":"Quelle est la solution de l'équation 3x + 5 = 20 ?","option_a":"x = 5","option_b":"x = 15","option_c":"x = 4","option_d":"x = 10","option_e":"","option_f":"","bonne_reponse":"A","explication":"3x + 5 = 20 → 3x = 15 → x = 5. La solution est x = 5.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":60438,"question":"Le théorème de Pythagore s'applique uniquement aux triangles rectangles.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Le théorème de Pythagore ne s'applique qu'aux triangles rectangles.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":60439,"question":"Quelle est l'aire d'un rectangle de longueur 8 cm et de largeur 5 cm ?","option_a":"40 cm²","option_b":"30 cm²","option_c":"26 cm²","option_d":"13 cm²","option_e":"","option_f":"","bonne_reponse":"A","explication":"L'aire d'un rectangle se calcule par A = longueur × largeur = 8 × 5 = 40 cm².","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":60440,"question":"Si deux angles d'un triangle mesurent 50° et 60°, quelle est la mesure du troisième angle ?","option_a":"70°","option_b":"80°","option_c":"90°","option_d":"100°","option_e":"","option_f":"","bonne_reponse":"A","explication":"La somme des angles d'un triangle est 180°. 180° - 50° - 60° = 70°.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":60441,"question":"Un parallélogramme a des côtés opposés parallèles et de même longueur.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"C'est une propriété fondamentale des parallélogrammes.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":60442,"question":"Quelle est la solution de l'équation 2(x - 3) = 4 ?","option_a":"x = 5","option_b":"x = 1","option_c":"x = 3","option_d":"x = 2","option_e":"","option_f":"","bonne_reponse":"A","explication":"2(x - 3) = 4 → x - 3 = 2 → x = 5.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":60443,"question":"L'aire d'un triangle se calcule par la formule : base × hauteur \/ 2.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"C'est la formule de base pour calculer l'aire d'un triangle.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":60444,"question":"Quelle est la valeur de x dans l'équation 4x - 7 = 2x + 5 ?","option_a":"x = 6","option_b":"x = 2","option_c":"x = 4","option_d":"x = 8","option_e":"","option_f":"","bonne_reponse":"A","explication":"4x - 7 = 2x + 5 → 2x = 12 → x = 6.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":60445,"question":"Un losange est un quadrilatère qui a ses côtés de même longueur.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Un losange a tous ses côtés de même longueur, mais ce n'est pas suffisant pour le définir.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":60446,"question":"Quelle est la circonférence d'un cercle de rayon 3 cm ? (π ≈ 3,14)","option_a":"18,84 cm","option_b":"9,42 cm","option_c":"6,28 cm","option_d":"12,56 cm","option_e":"","option_f":"","bonne_reponse":"B","explication":"La circonférence se calcule par C = 2πr = 2 × 3,14 × 3 ≈ 18,84 cm.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]