Memory Plane geometry (D)Versión en línea Basic Questions about Geometry por Tatiana Cruz A square has four right angles. How many right angles are there in a square? A straight angle measures exactly 180 degrees. A straight angle measures exactly 180 degrees. A triangle has three sides. What type of angle measures exactly 180 degrees? A square has four right angles. How many sides does a triangle have? How many right angles are there in a square? How many diagonals does a pentagon have? A triangle has three sides. What type of angle measures exactly 180 degrees? How many sides does a triangle have? How many diagonals does a pentagon have?