TNSB - 7 - Maths :: Practical Geometry Term 1
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[Author - Kripa S]
Objective: Revisit angles and lines
Subtopics to be covered:
- Parallel lines, perpendicular lines, angles
- Angle bisector of an angle
- Perpendicular Bisector of a line segment
Learning Outcome:
- Students can measure length of a line based of perpendicular bisector information
- Students can measure angles with angle bisectors
[Author - Kripa S]
http://www.textbooksonline.tn.nic.in/Books/Std07/Std07-I-MSSS-TM-1.pdf#page=88 (Tamil Medium)
http://www.textbooksonline.tn.nic.in/Books/Std07/Std07-I-MSSS-EM-1.pdf#page=85 (English medium)
[Author - Kripa S]
https://i.ytimg.com/vi/yTFfWMCZYK4/maxresdefault.jpg (Geometry Box)
https://upload.wikimedia.org/wikipedia/commons/thumb/3/32/Geom_compass_ruler.png/800px-Geom_compass_ruler.png (how to use a ruler, compass)
http://www.technologystudent.com/images7/obliq3.gif (Use of set squares)
http://www.helpingwithmath.com/images/geometry/angles_measuring11.gif (use of protractor)
[Author - Kripa S]
Make 8-10 chits of different types of angles. Hand over one chit to one bench and ask them to enact what angle they are. Eg: If it is an acute angle, the students will stand with hands close to each other. If is a complementary angle, two students will stand making an angle with their hands so that total looks 90 deg.
| Term' | Transliterated Term | Translated Term | |
| Parallel Lines | பேரலல் லைன்ஸ் | இணைக் கோடுகள் | |
| Perpendicular Lines | ்பெண்டிகுலார் லைன்ஸ் | செங்குத்துக் கோடுகள் | |
| Bisector | பைசெக்டர் | மையக்குத்து | |
| Diameter | டையமிட்டர் | விட்டம் | |
| Radius | ரேடியஸ் | ஆரம் | |
| Intersect | இன்டெர்செக்ட் | வெட்டுதல் |
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