Area of a triangle = `(base xx height)`.

Answer

To determine whether the statement "Area of a triangle = base x height" is true or false, we need to analyze the formula for the area of a triangle.

### Step-by-Step Solution:

1. **Understanding the Area of a Triangle**:
The area of a triangle is calculated using the formula:
\[ \text{Area} = \frac{1}{2} \times \text{base} \times \text{height} \]

2. **Identifying Base and Height**:
In a triangle, the base can be any side of the triangle, and the height is the perpendicular distance from the opposite vertex to the line containing the base.

3. **Applying the Formula**:
If we take a right-angled triangle, for instance, with:
- Base = BC
- Height = the perpendicular distance from A to line BC

The area can be expressed as:
\[ \text{Area} = \frac{1}{2} \times \text{BC} \times \text{height} \]

4. **Evaluating the Statement**:
The statement given in the question is "Area of a triangle = base x height". This is incomplete because it does not include the factor of \(\frac{1}{2}\).

5. **Conclusion**:
Therefore, the statement is **false**. The correct formula for the area of a triangle is:
\[ \text{Area} = \frac{1}{2} \times \text{base} \times \text{height} \]