Skip to content
Philoid
Browse Saved
Back to chapter
Mathematics
8. Lines and Angles
Home · Class 9 · Mathematics · Ref. Book · 8. Lines and Angles
Prev
Next
Q14 of 115 Page 8

If each of the two lines is perpendicular to the same line, what kind of lines are they to each other?

Let AB and CD be perpendicular to MN

∠ABD = 90o(AB perpendicular to MN) (i)


∠CON = 90o (CD perpendicular to MN) (ii)


Now,


∠ABD = ∠CON = 90o


Since, AB ‖ CP


Therefore, corresponding angles are equal.


More from this chapter

All 115 →
12

In Fig 8.114, AB||CD and P is any point shown in the figure. Prove that:

∠ABP + ∠BPD + ∠CDP = 360°


13

Two unequal angles of a parallelogram are in the ratio 2 : 3. Find all its angles in degrees.

15

In Fig 8.115, ∠1=60° and ∠2= if a right angle. Prove that l||m.

16

In Fig 8.116, if l||m||n and ∠1 = 60°, find ∠2

Questions · 115
8. Lines and Angles
1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Back to chapter
ADVERTISEMENT
About Contact Privacy Terms
Philoid · 2026
  • Home
  • Search
  • Browse
  • Quiz
  • Saved