Figure shows template ABCDEFG.

Points A, B, C, D, E, F and G are tangent points. CD is a tangent line.

Draw the template in full size.

1. Measure the distance between O and S

Mail your answer to: noh4568@yahoo.com.

The correct answer will get the participation certificate.

## Tuesday, June 3, 2008

### Tangency Problem 15

## Monday, June 2, 2008

### Tangency Problem 14

Figure shows a template ABCDEFG.

Points B, C, D, E, F and G are tangent points. FE is a tangent line.

Draw the template in full size.

1. Measure the radius of Rx

Mail your answer to: noh4568@yahoo.com.

The correct answer will get the participation certificate.

## Sunday, June 1, 2008

### Tangency Problem 13

Figure shows a template ABCDEFGHI.

Points B, C, D, E, F, G , H and I are tangent points. FE is a tangent line.

A is the vertex point of semi parabola and BC is an quadrant of ellipse.

Draw the template in full size.

1. Measure the length of EF

Mail your answer to: noh4568@yahoo.com.

The correct answer will get the participation certificate.

## Tuesday, May 27, 2008

### Tangency Problem 12

Figure 4 shows a ABCDEFGH template. Redraw the template shown in full size using geometrical construction methods. AB is a quadrant of an ellipse with O as the center of ellipse.

1. Measure the length of EF,

2. What is the distance between A and B?

Mail your answer to: noh4568@yahoo.com.

The correct answer will get the participation certificate.

### Tangency Problem 11

Figure shows a template. A, B, C, D, E, F and G are points of tangency. BC is a tangent line. O is the centre points of the ellipse. Draw the template in full size.

1. Measure the radius of Rx,

2. Measure the length of line BC.

Mail your answer to: noh4568@yahoo.com.

The correct answer will get the participation certificate.

### Tangency Tip 05

How to draw an arc in touch externally and touch through a given point

1. Draw a perpendicular line PR,

2. Draw a parallel line OA,

3. Draw line AP intersecting at K,

4. Draw line OK intersecting at S,

5. Centered at S, draw arc through P and K.

### Tangency Tip 04

How to draw an arc in touch internally and through a given point

1. Draw line PR and bisect it.

2. Draw straight line RO to intersect at S.

3. Centered at S, draw an arc through P and R.