ML Aggarwal CBSE Solutions Class 7 Math 10th Chapter Triangle and its Properties Exercise 10.2
Sum of angles in triangle = 180
x + y + z = 180
=> 48 + 37 + z = 180
=> 85 + z = 180
=> z = 180 degree – 85 degree
=> z = 95 95 degree
(8) One of the angles of a triangle measures 80 degree and the other angles are equal. Find the measure of each of the angles.
(9) If one angle of a triangle is 60 degree and the other two angles are in the ratio 2:3, find these angles.
Solution: 
(10) If the angles of a triangle are in the ratio 1:2:3. find the angles. Classify the triangle in two different ways.
(11) Can a triangle have three angles whose measure are
(i) 65 degree, 74 degree, 39 degree
(ii) 1/3 right angle, 1 right angle, 60 degree?
Solution: 
It is wrong
It is wrong