New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Properties of Triangles Self Practice 10A Solution
Ans. <BOC = 130 degree.
<OBC = 20 degree.
(5) The angles of a triangle are in the ratio 2 : 3 : 4. Find the measure of each angle of the triangle.
(6) Which of the following groups of 3 angles cannot be the angles of a triangle?
(a) 60o, 50o, 70o
(b) 49o, 72o, 63o
(7) A triangle has two equal angles, each of which is equal to twice the remaining third angle. Find the angles of the triangle.
Solution Number 5, 6 & 7: