ML Aggarwal Class 7 Solutions for ICSE Maths Chapter 11 Triangles and its Properties Ex 11.2

ML Aggarwal Class 7 Solutions Chapter 11 Triangles and its Properties Ex 11.2 for ICSE Understanding Mathematics acts as the best resource during your learning and helps you score well in your exams.

ML Aggarwal Class 7 Solutions for ICSE Maths Chapter 11 Triangles and its Properties Ex 11.2

Question 1.
Find the value of the unknown exterior angle x in each of the following diagrams:

Solution:

Question 2.
Find the value of the unknown interior angle x in each of the following diagrams:

Solution:

Question 3.
Find the value of x in each of the following diagrams:

Solution:

Question 4.
Find the value of unknown x in each of the following:

Solution:

Question 5.
Find the values of x and y in each of the following diagrams:

Solution:

Question 6.
Find the values of x and y in each of the following diagrams:

Solution:

Question 7.
In the adjoining figure, find the size of each lettered angle.

Solution:

Question 8.
One of the angles of a triangle measures 80° and the other two angles are equal. Find the measure of each of the equal angles.
Solution:

Question 9.
If one angle of a triangle is 60° and the other two angles are in the ratio 2 : 3, find these angles.
Solution:

Question 10.
If the angles of a triangle are in the ratio 1 : 2 : 3, find the angles. Classify the triangle in two different ways.
Solution:

Question 11.
Can a triangle have three angles whose measures are
(i) 65°, 74°, 39°?
(ii) \(\frac { 1 }{ 3 }\) right angle, 1 right angle, 60°?
Solution: