Question

Which of these following triangles can have two sides equal?

• A. Right-angled Triangle
• B. Isosceles Triangle
• C. Scalene Triangle
• D. Equilateral Triangle

Answer 1

Answer: (A), (B), (D)

The correct options are
A Right-angled Triangle
B Isosceles Triangle
D Equilateral Triangle

For a triangle to be isosceles, two of its sides must be equal in length. But it is also possible to have a right-angled triangle to have two equal sides. If the two equal sides have a length of 'a' then the length of its hypotenuse will be a√2.
In an equilateral triangle, the angles of the triangle are equal to each other and all equal to ${60}^{\circ }$.
It has all the three sides equal to each other. so according to this question, the equilateral triangle has at least two equal sides.
So an equilateral triangle is also the right answer to this question.