Question

Which of the following triangles are impossible to draw?1)a right obtuse triangle2)an equilateral scalene triangle3)an acute isosceles triangle4)a right equilateral triangle5)a right scalene triangle

Answer 1

Option 1: A triangle cannot be right-angled and obtuse at the same time.

Therefore it is impossible to draw a right obtuse triangle.

Option 2: An equilateral triangle refers to a triangle with all the sides equal to each other as well as all angles equal to each other. A triangle cannot be scalene and equilateral at the same time.

Therefore it is impossible to draw an equilateral scalene triangle.

Option 3: It is possible to draw an acute isosceles triangle.

Option 4: A triangle cannot to equilateral and right-angled at the same time.

Therefore it is impossible to draw a right equilateral triangle.

Option 5: It is possible to draw a right scalene triangle.

Therefore the correct answer is option 1 , 2 and 4.