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

This Video explains theorems and properties used in Practice Set 3.1 Class 9 of Triangles Chapter 3. #Geometry #Class9 #9thMaths Question 6. In the adjoining figure, line AB || line DE. Find the measures of ∠DRE and ∠ARE using given measures of some angles. Triangles Class 9 Practice Set 3.1 Question 7. In ∆ABC, bisectors of ∠A and ∠B intersect at point O. If ∠C = 70°, find the measure of ∠AOB. Question 8. In the adjoining figure, line AB || line CD and line PQ is the transversal. Ray PT and ray QT are bisectors of ∠BPQ and ∠PQD respectively. Prove that m ∠PTQ = 90°. Triangle Practice Set 3.1 Question 9. Using the information in the adjoining figure, find the measures of ∠a, ∠b and ∠c. Practice Set 3.1 Geometry Question 10. In the adjoining figure, line DE || line GF, ray EG and ray FG are bisectors of ∠DEF and ∠DFM respectively. Prove that: i. ∠DEG = (1/2)∠EDFii. EF = FG