9th Maths 2 Practice Set 3.1 Lecture 1 Triangles Chapter 3| Std 9th | Maths-2 | Geometry Maharashtra

This Video explains theorems and properties used in Practice Set 3.1 Class 9 of Triangles Chapter 3. #Geometry #Class9 #9thMaths Practice Set 3.1 Geometry 9th Standard Question 1.In the adjoining figure, ∠ACD is an exterior angle of ∆ABC. ∠B = 40°, ∠A = 70°. Find the measure of ∠ACD. Question 2.In ∆PQR, ∠P = 70°, ∠Q = 65°, then find ∠R. Practice Set 3.1 Geometry 9th Question 3.The measures of angles of a triangle are x°, (x – 20)°, (x – 40)°. Find the measure of each angle. 9th Class Geometry Practice Set 3.1 Question 4.The measure of one of the angles of a triangle is twice the measure of its smallest angle and the measure of the other is thrice the measure of the smallest angle. Find the measures of the three angles. Question 5.In the adjoining figure, measures of some angles are given. Using the measures, find the values of x, y, z.