Question

Given, $A=\{$ Triangles $\},B=\{$ Isosceles triangles $\},$

$C=\{$Equilateral triangles$\}.$ State whether the following statements are correct or incorrect. Give reasons.

B $\subseteq$ A

Answer 1

$A=\{$Triangles$\}$

$B=\{$Isosceles triangle$\}$

$C=\{$Equilateral triangle$\}$

Yes $B$ $\subseteq$ $A$ [$\because$ Every Isosceles triangle is a subset of equilateral triangle as all sides and angles are equal in equilateral triangles .In an isosceles $△$ only $2$ sides and $2$ angles are equal.]