A triangle containing an angle of 90 degrees.
                                                            
                                                     
                        
                                                
                        
                        
                            a triangle with an angle of 90; also called a right-angled triangle
                                                            
                                                     
                        
                                                
                        
                        
                            a geometric figure with three sides , where two of those sides meet at a right angle 
                                                            
                                                     
                        
                                                
                        
                        
                            a triangle containing one right angle
                                                            
                                                     
                        
                                                
                        
                        
                            a triangle in which one angle is a right angle
                                                            
                                                     
                        
                                                
                        
                        
                            a triangle which has a right angle, an obtuse triangle is a triangle which an obtuse angle, and an acute triangle is a triangle that has all of its angles acute
                                                            
                                                     
                        
                                                
                        
                        
                            triangle with one angle with a degree measure of 90
                                                            
                                                     
                        
                                                
                        
                        
                            A triangle with one 90 degree angle.
                                                            
                                                     
                        
                                                
                        
                        
                            a triangle containing a 90° angle.
                                                            
                                                     
                        
                                                
                        
                        
                            A triangle that has a 90º angle.
                                                            
                                                     
                        
                                                
                        
                        
                            a triangle in which one of the three angles is 90° ritual - the approved form of conducting a formal ceremony
                                                            
                                                     
                        
                                                
                        
                        
                            A triangle that has one angle that measures 90° (a right angle).
                                                            
                                                     
                        
                                                
                        
                        
                            triangle which contains a "right" angle (whose measure is 90°); in the conventional "a, b, c" labeling of the three sides, the side of length "c" will represent the hypotenuse
                                                            
                                                     
                        
                                                
                        
                        
                            A right triangle has one angle that is a right angle (extending 90 degrees).
                                                            
                                                     
                        
                                                
                        
                        
                            a three sided polygon that contains a 90 degree angle.
                                                            
                                                     
                        
                                                
                        
                        
                            A triangle that has a right angle. The Pythagorean Theorem is a relationship among the sides of a right triangle.
                                                            
                                                     
                        
                                                
                        
                        
                            a triangle that has one interior angle that is exactly 90°. Note, some right triangles are also scalene triangles.
                                                            
                                                     
                        
                                                
                        
                        
                            A triangle that has one 90º angle (right angle).
                                                            
                                                     
                        
                                                
                        
                        
                            A triangle with one right angle.
                                                            
                                                     
                        
                                                
                        
                        
                            A triangle where one of the three angles is 90 degrees.