Basic geometrical constructions
•Download as PPTX, PDF•
18 likes•16,019 views
Basic geometrical constuctions is how to construct angle by using compass and ruler. this slide can help students or teachers to construct any angles especially for special angles they are 90 degree, 60 degree, 45 degree and 30 degree.
Recommended
More Related Content
What's hot
What's hot (20)
Similar to Basic geometrical constructions
More from SMPK Penabur Gading Serpong
More from SMPK Penabur Gading Serpong (20)
Recently uploaded
Recently uploaded (20)
Basic geometrical constructions
- 1. BASIC GEOMETRICAL CONSTRUCTIONS SMPK PENABUR GS
- 2. Constructing a 900 Angle Step 1 Draw a line with the measure is 5 cm 5 cm
- 3. Constructing a 900 Angle Step 2 Draw point A at the line A
- 4. Constructing a 900 Angle Step 3 Place the point of the compass at A and draw an arc that passes through the line at point P and Q P A Q
- 5. Constructing a 900 Angle Step 4 Place the point of the compass at P and draw an arc that passes through Q P A Q
- 6. Constructing a 900 Angle Step 5 Place the point of the compass at Q and draw an arc that passes through P that cuts the arc drawn in Step 4 at R. R P A Q
- 7. Constructing a 900 Angle Step 6 By using ruler, joint A to R, so angle RAQ is 900 R 900 P A Q
- 8. Constructing a 600 Angle Step 1 Draw the arm PQ. P Q
- 9. Constructing a 600 Angle Step 2 Place the point of the compass at P and draw an arc that passes through Q. P Q
- 10. Constructing a 600 Angle Step 3 Place the point of the compass at Q and draw an arc that passes through P. Let this arc cut the arc drawn in Step 2 at R. R P Q
- 11. Constructing a 600 Angle Step 4 Join P to R. The angle QPR is 60o R 600 P Q
- 12. Constructing a 30 0 Angle
- 13. Constructing a 30 0 Angle Step 1 Construct 600 angle R 600 P Q
- 14. Constructing a 30 0 Angle Step 2 With the point of the compass at P , draw an arc intersecting arm PQ at M and intersecting arm PR at N. R N 600 P Q M
- 15. Constructing a 30 0 Angle Step 3 At point M and N draw an arc with same radius then intersect at point T R T N 600 P Q M
- 16. Constructing a 30 0 Angle Step 4 Join P to T. Then angle TPQ is 300 R T N 600 300 P Q M
- 17. Your Turn Construct the angle below by using compass and ruler : a. 450 b. 22,5 c. 150 d. 67,50 e. 52,50
- 18. Constructing a 450 angle
- 19. Constructing a 450 angle Step 1 Construct 900 angle R P Q
- 20. Constructing a 450 angle Step 2 Put your Compass at the point P, and draw an arc intersect PQ and PR at A and B. R B P A Q
- 21. Constructing a 450 angle Step 3 Put your Compass at the point A and B then draw an arc with the same radius so intersect each other at the point C C R B P A Q
- 22. Constructing a 450 angle Step 4 Joint P to C, so angle CPQ is 450 C R B 450 P A Q