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GEOMETRICAL DRAWINGGEOMETRICAL DRAWING
CHAPTER 1 : GEOMETRY – CIRCLES
LOCAL PUBLICATIONS (001427383-A)
1. Figure 1 shows a circle. Determine the center of the circle
FIGURE 1
D
A
B
C
O
LOCAL PUBLICATIONS (001427383-A)
2. Figure 2 shows an arc. Determine the center of the arc.
CHAPTER 1 : GEOMETRY – CIRCLES
FIGURE 2
A
B
C
D
O
LOCAL PUBLICATIONS (001427383-A)
CHAPTER 1 : GEOMETRY – CIRCLES3. Construct a circle through the given point A, B and C.
A
B
C
O
CHAPTER 1 : GEOMETRY – CIRCLES
LOCAL PUBLICATIONS (001427383-A)
4. Figure 3 shows a triangle ABC. Construct a circumscribed circle of triangle ABC.
FIGURE 3
A
B
C
O
LOCAL PUBLICATIONS (001427383-A)
CHAPTER 1 : GEOMETRY – CIRCLES5. Figure 4 shows a triangle ABC. Construct an external circle of the triangle.
FIGURE 4
A B
C
O
LOCAL PUBLICATIONS (001427383-A)
CHAPTER 1 : GEOMETRY – CIRCLES6. Figure 5 shows a triangle ABC. Construct an inscribed circle of the triangle.
FIGURE 5A B
C
O
LOCAL PUBLICATIONS (001427383-A)
CHAPTER 1 : GEOMETRY – CIRCLES7. Draw a semi circle through the point A, B and C. Angle of ABC = 90o.
A
B
C
O
LOCAL PUBLICATIONS (001427383-A)
CHAPTER 1 : GEOMETRY – CIRCLES8. Redraw the template shown in Figure 7, using geometrical techniques. The new position of points B and C is
as shown.
FIGURE 7
AD
B
Semi circle
CC
B
A
D
O
O1 O1
LOCAL PUBLICATIONS (001427383-A)
CHAPTER 1 : GEOMETRY – CIRCLES
FIGURE 7
Semi circle
ED
C
A
B
x
O1
C
E
A
B
D
O O1
9. Figure 7 shows a template ABCDE. Redraw the template by using the geometrical methods. The new position of point B and point C are as shown.
LOCAL PUBLICATIONS (001427383-A)
CHAPTER 1 : GEOMETRY – CIRCLES10. Redraw the template shown in Figure 8, using geometrical techniques. The new line of BC is as shown.
A
B
C
D
E
Semi circle
O1
FIGURE 8
B
CO
D
E
A
O1
LOCAL PUBLICATIONS (001427383-A)
CHAPTER 1 : GEOMETRY – CIRCLES
D
A
C
B
Semi circle
O1
FIGURE 9
O1
A
B
C
D
O
11. Redraw the template shown in Figure 9, using geometrical techniques. The new line of points A and B are as shown.