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Activity 6 (Page 120)
Last updated at July 24, 2025 by Teachoo
Class 7 (Ganita Prakash & Old NCERT)
Chapter 5 Class 7 - Parallel and Intersecting Lines (Ganita Prakash)
- Intersecting Lines
- Parallel and Perpendicular lines
- Between lines
- Parallel and Perpendicular lines in Paper Folding
- Figure it out - Page 113, 114
- Transversals
- Corresponding Angles
-
Alternate Angles
- Interior angle on Same side of Transversal
- Drawing Parallel Lines
- Parallel Illusions
- Figure it out - Page 123, 124, 125
Transcript
Activity 6 (Page 120) - Justifying Alternate angles equal In Fig. 5.25, if ∠f is 120° what is the measure of its alternate angle ∠d? Prove how We have to prove ∠ f = ∠ d Now, by Vertically opposite angles ∠ h = ∠ f ∠ h = 120° And, Since corresponding angles are equal for parallel lines l & m ∠ d = ∠ h ∠ d = 120° Thus, ∠ f = ∠ d = 120° Hence proved
