Chapter 6 – Triangles
15. Foot of a 10 m long ladder leaning against a vertical wall is 6 m away from the base of the wall. Find the height of the point on the wall where the top of the ladder reaches.
05
Jul
15. Foot of a 10 m long ladder leaning against a vertical wall is 6 m away from the base of the wall. Find the height of the point on the wall where the top of the ladder reaches. 15. Foot of a 10 m long ladder leaning against a vertical wall is 6 m [...]
14. A 15 metres high tower casts a shadow 24 metres long at a certain time and at the same time, a telephone pole casts a shadow 16 metres long. Find the height of the telephone pole.
05
Jul
14. A 15 metres high tower casts a shadow 24 metres long at a certain time and at the same time, a telephone pole casts a shadow 16 metres long. Find the height of the telephone pole. 14. A 15 metres high tower casts a shadow 24 metres long at a certain time and at [...]
13. In Fig. 6.12, if ∠ACB = ∠CDA, AC = 8 cm and AD = 3 cm, find BD.
05
Jul
13. In Fig. 6.12, if ∠ACB = ∠CDA, AC = 8 cm and AD = 3 cm, find BD. 13. In Fig. 6.12 AC = 8 cm and AD = 3 cm find BD. if ∠ACB = ∠CDA July 5, 2021 Category: Chapter 6 - Triangles , Maths , NCERT Class 10 ,
12. Areas of two similar triangles are 36 cm^2 and 100 cm^2. If the length of a side of the larger triangle is 20 cm, find the length of the corresponding side of the smaller triangle.
05
Jul
12. Areas of two similar triangles are 36 cm^2 and 100 cm^2. If the length of a side of the larger triangle is 20 cm, find the length of the corresponding side of the smaller triangle. 12. Areas of two similar triangles are 36 cm^2 and 100 cm^2. If the length of a side of [...]
11. In a triangle PQR, N is a point on PR such that Q N ⊥ PR . If PN. NR = QN^2,prove that ∠PQR = 90° .
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Jul
11. In a triangle PQR, N is a point on PR such that Q N ⊥ PR . If PN. NR = QN^2,prove that ∠PQR = 90° . 11. In a triangle PQR N is a point on PR such that Q N ⊥ PR . If PN. NR = QN^2 prove that ∠PQR = [...]
10. Corresponding sides of two similar triangles are in the ratio of 2 : 3. If the area of the smaller triangle is 48 cm^2, find the area of the larger triangle.
05
Jul
10. Corresponding sides of two similar triangles are in the ratio of 2 : 3. If the area of the smaller triangle is 48 cm^2, find the area of the larger triangle. 10. Corresponding sides of two similar triangles are in the ratio of 2 : 3. If the area of the smaller triangle is [...]
9. ABCD is a trapezium in which AB II DC and P and Q are points on AD and BC, respectively such that PQ II DC. If PD = 18 cm, BQ = 35 cm and QC = 15 cm, find AD.
05
Jul
9. ABCD is a trapezium in which AB II DC and P and Q are points on AD and BC, respectively such that PQ II DC. If PD = 18 cm, BQ = 35 cm and QC = 15 cm, find AD. 9. ABCD is a trapezium in which AB II DC and P and [...]
8. In Fig. 6.11, if DE II BC, find the ratio of ar (ADE) and ar (DECB).
05
Jul
8. In Fig. 6.11, if DE II BC, find the ratio of ar (ADE) and ar (DECB). 8. In Fig. 6.11 find the ratio of ar (ADE) and ar (DECB). if DE II BC July 5, 2021 Category: Chapter 6 - Triangles , Maths , NCERT Class 10 ,
7. If ∆ ABC ~ ∆ DEF, AB = 4 cm, DE = 6 cm, EF = 9 cm and FD = 12 cm, find the perimeter of ∆ ABC.
05
Jul
7. If ∆ ABC ~ ∆ DEF, AB = 4 cm, DE = 6 cm, EF = 9 cm and FD = 12 cm, find the perimeter of ∆ ABC. 7. If ∆ ABC ~ ∆ DEF AB = 4 cm DE = 6 cm EF = 9 cm and FD = 12 cm find [...]
6. Find the altitude of an equilateral triangle of side 8 cm.
05
Jul
6. Find the altitude of an equilateral triangle of side 8 cm. 6. Find the altitude of an equilateral triangle of side 8 cm. July 5, 2021 Category: Chapter 6 - Triangles , Maths , NCERT Class 10 ,