Indicate whether the given statement is true or false :
[Triangles ) ` sube ` (Quadrilaterals )

Answer

To determine whether the statement "Triangles ⊆ Quadrilaterals" is true or false, we can follow these steps:

1. **Understand the Definitions**:
- A triangle is a polygon with three sides.
- A quadrilateral is a polygon with four sides.

2. **Analyze the Relationship**:
- Since a triangle has three sides and a quadrilateral has four sides, we need to assess if all triangles can be classified as quadrilaterals.

3. **Determine the Inclusion**:
- For one set to be a subset of another (A ⊆ B), every element of set A must also be an element of set B.
- In this case, since triangles (three sides) cannot be classified as quadrilaterals (four sides), not all elements of the triangle set are included in the quadrilateral set.

4. **Conclude the Statement**:
- Therefore, the statement "Triangles ⊆ Quadrilaterals" is false because triangles do not fit the definition of quadrilaterals.

Final Answer: The statement is **False**.

---