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Sets — MATHS STD 8 — Question

ICSE BoardEnglish MediumSTD 8MATHSSets1 Mark
Question
Given, $A = \{$Triangles$\}, B = \{$Isosceles triangles$\}, C = \{$Equilateral triangles$\}$. State the following statement is true or false. Give reasons. $C ⊆ B ⊆ A $
✓

Answer

True.
Explanation:
$A = \{$Triangles$\}$
$B = \{$Isosceles triangles$\}$
$C = \{$Equilateral triangles$\}$
$C ⊆ B ⊆ A ....$True
$\because$ Each equilateral triangle is isosceles also and each isosceles $\triangle$ is a form of triangles.

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