Question

If I combine 2 equilateral triangles along a side, what quadrilateral do I get?

• A. Rhombus
• B. Square
• C. Rectangle
• D. Parallelogram

Answer 1

The correct option is A

Rhombus

If I combine 2 equilateral triangles, I get a quadrilateral with all sides equal. Since the angle of an equilateral triangle is ${60}^{\circ }$, no sides will be perpendicular. The quadrilateral formed cannot be a square. Hence, it is a rhombus.