What type of triangle representation is Mr. Brown asking his students to solve when working on missing angles?

The type of triangle representation that involves solving for missing angles primarily relies on a numeric representation. This means students are often presented with angles either as numeric values (like degrees) or as expressions that they can solve. When dealing with triangle problems, the key concepts are centered around using the properties of triangles—specifically, that the sum of the interior angles in any triangle adds up to 180 degrees.

By working with numeric values or calculations, students can determine the missing angles by performing arithmetic operations based on the given angles. This approach sharpens their skills in numerical reasoning and reinforces the fundamental relationship between the angles in triangles.

While graphical, algebraic, and visual representations can aid in understanding and illustrating triangle properties, the direct solving of missing angles leans heavily on numeric values, making the numeric representation the best fit for this scenario.