1. Start by drawing AB = 8cm using the ruler.
2. With A as the center, and a radius greater than half of AB, draw an arc above and below AB. Label the intersections of the arc with AB as D and E, respectively.
3. With D and E as centers, draw arcs that intersect each other. Label the intersection as C.
4. Connect A and C to form triangle ABC with BC equal to 8cm.
5. Bisect each of the angles at A, B, and C by drawing arcs above and below each angle. Label the intersections as F, G, and H, respectively.
6. Connect F, G, and H to the opposite vertices to find the incenter O.
7. Draw a circle with center O passing through A.
8. Measure the distance from O to A to find OA.
9. Measure the angle ACD by using the compass to measure the angle between AD and CD.
Using ruler and a pair of compasses only, contruct triangle ABC such that AB=8cm, Angle ABC=60 degrees and Angle BAC=75 degrees
1.locate the point O inside triangle ABC equidistant from A, B and C.
2.contruct a circle with the centre O, which pases through A.
3.Measure
1.OA
2.angle ACD
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