# Math Text

> Explore Aspose.Slides for .NET MathematicalText examples: create and format equations, fractions, matrices, and symbols with C# in PPT, PPTX, and ODP presentations.

Source: https://docs.aspose.com/slides/net/examples/elements/math-text/
Updated: 2026-08-05


This article demonstrates working with mathematical text shapes and formatting equations using **Aspose.Slides for .NET**.

## **Add Math Text**

Create a math shape containing a fraction and the Pythagorean formula.

```csharp
using Aspose.Slides;
using Aspose.Slides.MathText;

static void AddMathText()
{
    using var presentation = new Presentation();
    var slide = presentation.Slides[0];

    // Add a Math shape to the slide.
    var mathShape = slide.Shapes.AddMathShape(0, 0, 720, 150);

    // Access the math paragraph.
    var mathParagraph = ((MathPortion)mathShape.TextFrame.Paragraphs[0].Portions[0]).MathParagraph;

    // Add a simple fraction: x / y
    var fraction = new MathematicalText("x").Divide("y");
    mathParagraph.Add(new MathBlock(fraction));

    // Add equation: c² = a² + b²
    var mathBlock = new MathematicalText("c")
        .SetSuperscript("2")
        .Join("=")
        .Join(new MathematicalText("a").SetSuperscript("2"))
        .Join("+")
        .Join(new MathematicalText("b").SetSuperscript("2"));

    mathParagraph.Add(mathBlock);
}
```

## **Access Math Text**

Locate a shape that contains a math paragraph on the slide.

```csharp
using Aspose.Slides;
using Aspose.Slides.MathText;

static void AccessMathText()
{
    using var presentation = new Presentation("sample.pptx");
    var slide = presentation.Slides[0];

    // Find the first shape that contains a math paragraph.
    var mathShape = slide.Shapes
        .OfType<IAutoShape>()
        .FirstOrDefault(s =>
            s.TextFrame != null &&
            s.TextFrame.Paragraphs.Any(p =>
                p.Portions.Any(portion => portion is MathPortion)));

    if (mathShape != null)
    {
        var mathParagraph = ((MathPortion)mathShape.TextFrame.Paragraphs[0].Portions[0]).MathParagraph;

        // Example: create a fraction (not added here).
        var fraction = new MathematicalText("x").Divide("y");

        // Use mathParagraph or fraction as needed...
    }
}
```

## **Remove Math Text**

Delete a math shape from the slide.

```csharp
using Aspose.Slides;
using Aspose.Slides.MathText;

static void RemoveMathText()
{
    using var presentation = new Presentation();
    var slide = presentation.Slides[0];

    var mathShape = slide.Shapes.AddMathShape(50, 50, 100, 50);
    var mathParagraph = ((MathPortion)mathShape.TextFrame.Paragraphs[0].Portions[0]).MathParagraph;
    var fraction = new MathematicalText("x").Divide("y");
    mathParagraph.Add(new MathBlock(fraction));

    slide.Shapes.Remove(mathShape);
}
```

## **Format Math Text**

Set font properties for a math portion.

```csharp
using Aspose.Slides;
using Aspose.Slides.MathText;

static void FormatMathText()
{
    using var presentation = new Presentation();
    var slide = presentation.Slides[0];

    var mathShape = slide.Shapes.AddMathShape(50, 50, 100, 50);
    var mathParagraph = ((MathPortion)mathShape.TextFrame.Paragraphs[0].Portions[0]).MathParagraph;
    var fraction = new MathematicalText("x").Divide("y");
    mathParagraph.Add(new MathBlock(fraction));

    mathShape.TextFrame.Paragraphs[0].Portions[0].PortionFormat.FontHeight = 20;
}
```