VIEWS: 1 PAGES: 4 POSTED ON: 7/13/2012
What Are Corresponding Angle What Are Corresponding Angle In mathematical geometry, when a transversal passes through the two parallel lines at different points then it forms a corresponding angles. In a simple mean we can say that when two parallel lines are intersected by the third line then the newly generated angles in matching corners are known as corresponding angles. Suppose there is a line L which act as a transversal for two parallel lines ‘a’ and ‘b’ then eight angles are formed there. These eight angles are categorized into two categories. First category is known as interior angles and second category are known as exterior angles. Interior angles are those which are defined between the line of a and b. In the same aspect remaining angles are known as exterior angles. Through the above definition we can say that corresponding angles are two congruent angles which are lies on the same side of the transversal line ‘L’ and they are situated the same way on two different parallel lines. In the below we show you a diagram which helps in understanding the Corresponding Angles Definition. Know More About :- Derivative of cotx Tutorcircle.com Page No. : 1/4 In the above diagram we can see that there are two parallel lines ‘a’ and ‘b’ which are intersected by the third line L. Due to the intersection of line a and b by the line L there are eight angles formed which named as angle p, angle q, angle r, angle s, angle u, angle v, angle w and angle x. In the above the angle r, angle s, angle u and angle v are known as interior angles because they are formed between the line ‘a’ and line ‘b’. In the same aspect angle p, angle q, angle w and angle x are known as exterior angles. Due to this there are four corresponding angles formed which are given below: ∠q is equal to the ∠v, And ∠p is equal to ∠u, And ∠r is equal to ∠w, And ∠s is equal to ∠s Now we show you how corresponding angles are helpful in calculating the measurement of an angle. Example a: suppose there is a figure as like shown above, if there is an angle ‘q’ which has the measure of 45 degree. Now we need to find the measure of other seven angles by following the property of corresponding angles? Solution: In the above question given that angle ‘q’ is equal to the 44 degree then ∠v= 45 degree because according to corresponding angle definition ∠v and ∠q are the corresponding angles. So, the angles ‘∠v’ and ‘∠q’ are equal to each other. Therefore ∠v = 45 degree. Learn More :- Transformations On A Coordinate Plane Tutorcircle.com Page No. : 2/4 As we all are very well aware that a straight angle has the measure of 180 degree. So, ∠q+ ∠p = 180 degree. 45 degree + ∠p = 180, ∠p = 180 – 45, ∠p = 135 degree, Here ∠r and ∠u are corresponding angles. Therefore, ∠r and ∠u are equal. Therefore, ∠u is also 138 degree. We know that, a straight angle has a measure of 180 degree. So, ∠p +∠q= 180 degree. 42 + ∠q= 180, ∠q = 180 – 42, ∠q = 138, According to the corresponding angle definition ∠p and ∠u are corresponding angles. Then, ∠p and ∠u are equal to each other. Therefore, ∠u is also 138 degree. Tutorcircle.com Page No. : 3/4 Page No. : 2/3 Thank You For Watching Presentation