user-avatar
n.dung2605
2 năm trước
Trong hình vẽ bên, hình tam giác ABC được gọi là hình tam giác thứ nhất. Nối trung điểm các cạnh của hình tam giác thứ nhất, ta được tam giác thứ hai. Nối trung điểm các cạnh của hình tam giác thứ hai ta được tam giác thứ ba. Cứ tiếp tục cho đến hình tam giác thứ 10. Khi đó trên hình vẽ sẽ có tất cả bao nhiêu hình tam giác?
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

49. Is/Are either my brothers or my father responsible? 50. Is/Are either my father or my brothers responsible? 51. There is/are two reasons [plural subject] for this. 52. There is/are no reason for her lateness for work. 53. Here is/are two apples that you want. 54. My glasses were /was on the bed. 55. My pants were /was torn while I was climbing up the tree yesterday morning. 56. A pair of plaid trousers is/are in the closet. 57. The news from the front page is/are bad. 58. Measles is/are a dangerous disease for pregnant women. 59. My assets were /was wiped out in the depression. 60. The average worker's earnings have/has gone up dramatically. 61. Our thanks go /goes to the workers who supported the union. 62. Some of the voters is/are still angry. 63. A large percentage of the older population is/are voting against her. 64. Two-fifths of the troops were /was lost in the battle. 65. Two-fifths of the vineyard were /was destroyed by fire. 66. Forty percent of the students is/are in favor of changing the policy. 67. Forty percent of the student body is/are in favor of changing the policy. 68. Two and two is/are four. 69. Four times four divided by two is/are eight. 70. The department members but not the chair has / have decided not to teach on Valentine's Day. 71. It is not the faculty members but the president who decide / decides this issue. 72. It were /was the speaker, not his ideas, that has/ have provoked the students to riot. 73. The colors of the rainbow is/are beautiful. 74. There is/are a problem with the balance sheet. Here is/are the papers you requested 75. The cow and the pig is/are jumping over the moon.

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team