If one interior angle of a triangle is a right angle, it is easy to prove that the sum of the other two angles is 90 degrees.
如果三角形的一个内角是直角，那么其余两个角的和为90度，这一点很容易证明。
如果三角形的一個內角是直角，則其餘兩個角的和為90度，這可以很容易證明。
삼각형의 한 내각이 직각이면, 나머지 두 각의 합이 90도임을 쉽게 증명할 수 있다.
Jika salah satu sudut dalam sebuah segitiga adalah sudut siku-siku, dapat dibuktikan dengan mudah bahwa jumlah dua sudut yang tersisa adalah 90 derajat.
Nếu một góc trong của tam giác là góc vuông, có thể dễ dàng chứng minh rằng tổng hai góc còn lại bằng 90 độ.
Kung ang isa sa mga panloob na anggulo ng isang tatsulok ay isang kanang anggulo, madaling patunayan na ang kabuuan ng natitirang dalawang anggulo ay 90°.
Quizzes for review
If one interior angle of a triangle is a right angle, it is easy to prove that the sum of the other two angles is 90 degrees.
If one interior angle of a triangle is a right angle, it is easy to prove that the sum of the other two angles is 90 degrees.
三角形の一つの内角が直角である場合、残りの二つの角の和が90度になることは簡単に証明できる。
Related words
直角
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