Answer:Here are 2 things that can represent each type of triangle based on angles:*Acute Triangle (all angles less than 90°)*1. *Roof of a modern house*: Some modern house designs feature roofs with acute angles, giving them a sleek and contemporary look.2. *Arrowhead*: An arrowhead is often shaped like an acute triangle, allowing it to cut through the air efficiently.*Right Triangle (one angle exactly 90°)*1. *Picture frame*: A standard picture frame is often a right triangle (or rectangle with right angles), providing a clean and symmetrical shape.2. *Building corner*: The corner of a building is often a right angle, creating a sharp and defined edge.*Obtuse Triangle (one angle greater than 90°)*1. *Roof of an old barn*: Some traditional barn roofs feature obtuse angles, giving them a distinctive and rustic appearance.2. *Sailboat sail*: Some sailboat sails are designed with obtuse angles to maximize wind capture and stability.These are just a few examples, but triangles can be found in many aspects of design, architecture, and nature!Step-by-step explanation:Here's a step-by-step explanation of acute, right, and obtuse triangles:*Acute Triangle*1. An acute triangle is a triangle with all angles less than 90°.2. Each angle is "acute" or "sharp".3. The sum of the interior angles is still 180°, just like any triangle.4. Acute triangles can be equilateral (all sides equal) or isosceles (two sides equal), or scalene (all sides different).*Right Triangle*1. A right triangle is a triangle with one angle exactly 90° (a "right angle").2. The side opposite the right angle is called the hypotenuse (the longest side).3. Right triangles follow the Pythagorean theorem: a² + b² = c² (where a and b are the legs, and c is the hypotenuse).4. Right triangles are commonly used in trigonometry and geometry.*Obtuse Triangle*1. An obtuse triangle is a triangle with one angle greater than 90°.2. The obtuse angle is "wider" than a right angle.3. The sum of the interior angles is still 180°.4. Obtuse triangles can be isosceles or scalene, but not equilateral (since all angles would be 60°).These definitions help you identify and work with different types of triangles in geometry and real-world applications!