What is "in triangle trs?

In triangle TRS:

• It's a triangle, so the sum of its interior angles (∠T + ∠R + ∠S) is always 180 degrees. See more about <a href="https://www.wikiwhat.page/kavramlar/triangle">triangles</a>.
• The triangle is composed of three <a href="https://www.wikiwhat.page/kavramlar/line%20segments">line segments</a>: TR, RS, and ST.
• The vertices (corners) of the triangle are T, R, and S. Understand more about <a href="https://www.wikiwhat.page/kavramlar/vertex">vertex</a>.
• Depending on the side lengths and angles, triangle TRS can be classified as scalene, isosceles, or equilateral. Learn more about different <a href="https://www.wikiwhat.page/kavramlar/triangle%20types">triangle types</a>.
• Similarly, it can be classified by its angles as acute, right, or obtuse.
• The <a href="https://www.wikiwhat.page/kavramlar/area">area</a> of the triangle can be calculated using various formulas, such as 1/2 * base * height, or Heron's formula if all three side lengths are known.
• The <a href="https://www.wikiwhat.page/kavramlar/perimeter">perimeter</a> of the triangle is the sum of the lengths of all three sides: TR + RS + ST.