hãy vẽ hình tam giác có 3 góc nhọn .1 góc tu.1 góc vuông
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hình như bạn sai đề rồi hình vuông thì làm gì có góc nhọn và hình vương cũng không có góc tù hình tam giác thì không có 2 góc vuông đâu chỉ có 1 góc thôi
Bài làm
Theo hình,
Góc A là góc nhọn
Góc B là góc tù
góc C là góc vuông
Góc D là góc tù
Ta biết góc tù>90 độ góc nhọn<90 độ
Nếu một tam giác có 2 góc tù thì tổng 2 góc trong tam giác đó lớn hơn 180 độ ko thõa mãn tổng 3 góc trong 1 tam giác
Nếu một tam giác có 2 góc vuông thì góc còn lại là 0 độ vô lí
do đó trong 1 tam giác chỉ có thể có 1 góc tù hoặc 1 góc vuông
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Tam giác có ba góc nhọn là tam giác có 3 góc nhỏ hơn 90 độ nhé (ABC)
Tam giác có 1 góc tù là tam giác có một góc lớn hơn 90 độ (DEF)còn 1 góc vuông là tam giác có một góc bằng 90 độ (NML)
Nhớ k cho mình nhó =))))