NCERT Class 9
4. In Fig.7.6, BA ⊥ AC, DE ⊥ DF such that BA = DE and BF = EC. Show that ∆ ABC ≅ ∆ DEF.
30
Jun
4. In Fig.7.6, BA ⊥ AC, DE ⊥ DF such that BA = DE and BF = EC. Show that ∆ ABC ≅ ∆ DEF. 4. In Fig.7.6 BA ⊥ AC DE ⊥ DF such that BA = DE and BF = EC. Show that ∆ ABC ≅ ∆ DEF. June 30, 2021 Category: Chapter [...]
3. CDE is an equilateral triangle formed on a side CD of a square ABCD (Fig.7.5). Show that ∆ ADE ≅ ∆ BCE.
30
Jun
3. CDE is an equilateral triangle formed on a side CD of a square ABCD (Fig.7.5). Show that ∆ ADE ≅ ∆ BCE. 3. CDE is an equilateral triangle formed on a side CD of a square ABCD (Fig.7.5). Show that ∆ ADE ≅ ∆ BCE. June 30, 2021 Category: Chapter 7 - Triangles , [...]
2. In Fig.7.4, D and E are points on side BC of a ∆ ABC such that BD = CE and AD = AE. Show that ∆ ABD ≅ ∆ ACE.
30
Jun
2. In Fig.7.4, D and E are points on side BC of a ∆ ABC such that BD = CE and AD = AE. Show that ∆ ABD ≅ ∆ ACE. 2. In Fig.7.4 D and E are points on side BC of a ∆ ABC such that BD = CE and AD = AE. [...]
1. ABC is an isosceles triangle with AB = AC and BD and CE are its two medians. Show that BD = CE.
30
Jun
1. ABC is an isosceles triangle with AB = AC and BD and CE are its two medians. Show that BD = CE. 1. ABC is an isosceles triangle with AB = AC and BD and CE are its two medians. Show that BD = CE. June 30, 2021 Category: Chapter 7 - Triangles , [...]
12. Is it possible to construct a triangle with lengths of its sides as 8 cm, 7 cm and 4 cm? Give reason for your answer.
30
Jun
12. Is it possible to construct a triangle with lengths of its sides as 8 cm, 7 cm and 4 cm? Give reason for your answer. 12. Is it possible to construct a triangle with lengths of its sides as 8 cm 7 cm and 4 cm? Give reason for your answer. June 30, 2021 [...]
11. Is it possible to construct a triangle with lengths of its sides as 9 cm, 7 cm and 17 cm? Give reason for your answer.
30
Jun
11. Is it possible to construct a triangle with lengths of its sides as 9 cm, 7 cm and 17 cm? Give reason for your answer. 11. Is it possible to construct a triangle with lengths of its sides as 9 cm 7 cm and 17 cm? Give reason for your answer. June 30, 2021 [...]
10. M is a point on side BC of a triangle ABC such that AM is the bisector of ∠BAC. Is it true to say that perimeter of the triangle is greater than 2 AM? Give reason for your answer.
30
Jun
10. M is a point on side BC of a triangle ABC such that AM is the bisector of ∠BAC. Is it true to say that perimeter of the triangle is greater than 2 AM? Give reason for your answer. 10. M is a point on side BC of a triangle ABC such that AM [...]
9. AD is a median of the triangle ABC. Is it true that AB + BC + CA > 2 AD? Give reason for your answer.
30
Jun
9. AD is a median of the triangle ABC. Is it true that AB + BC + CA > 2 AD? Give reason for your answer. 9. AD is a median of the triangle ABC. Is it true that AB + BC + CA > 2 AD? Give reason for your answer. June 30, 2021 [...]
8. In ∆ PQR, ∠P = 70° and ∠R = 30°. Which side of this triangle is the longest? Give reason for your answer.
30
Jun
8. In ∆ PQR, ∠P = 70° and ∠R = 30°. Which side of this triangle is the longest? Give reason for your answer. ∠P = 70° and ∠R = 30°. Which side of this triangle is the longest? Give reason for your answer. 8. In ∆ PQR June 30, 2021 Category: Chapter 7 - [...]
7. If ∆ PQR ≅ ∆ EDF, then is it true to say that PR = EF? Give reason for your answer.
30
Jun
7. If ∆ PQR ≅ ∆ EDF, then is it true to say that PR = EF? Give reason for your answer. 7. If ∆ PQR ≅ ∆ EDF then is it true to say that PR = EF? Give reason for your answer. June 30, 2021 Category: Chapter 7 - Triangles , Maths , [...]