Three birds cross a point at the same instant with equal speed. Two of the birds fly exactly in opposite direction. After they cross the point at any instant of time the three birds are joined by straight lines to form a triangle. The nature of the triangle is

i) Isosceles ii) equilateral iii) Right angled iv) Right-angled isosceles

• they will form a rightangled isosceles triangle :)
• 13 years agoHelpfull: Yes(1) No(0)