Online Types of Angles Tutors

Online Types of Angles Tutors Angle is formed between two lines or rays and an angle is the measure of rotation between those lines. There are different types of angles in geometry. An angle which is less than 90 is known as an acute angle, an angle which is exactly equal to 90is known as a right angle, and an angle greater than 90is known as an obtuse angle. An angle that is exactly 180 is known as a straight angle and the angle which is greater than 180 is known as a reflex angle. Example 1: Angles in a triangle are 45, 45 and x. What is the value of the third angle? Sum of the angles in a triangle= 180 This gives: 45 + 45 + x = 180 Now in order to solve for x, we can add the numbers first. This implies: 90 + x = 180 Hence, x = 180 - 90 = 90 Therefore the measure of the third angle, x = 90 Example 2: A line divides another straight line into two angles. If one part of the angle is 97, then what is the other part of the angle on the straight line? Given one part of the angle on the straight line = 97 Let the other part of the angle on the straight line = x Total angle on a straight line = 180 This implies: 97 + x = 180 Hence, x = 180 - 97 = 83 Therefore the measure of the other part of the angle, x = 83