1.construct an isoceles triangle PQR such that PQ=PR=6.5 cm. angle PQR = 75 DEG.
using ruler and compass only constructr a circumircle to this triangle.
2. construct a triangle ABC such that AB = 6.5 cm'AC = 5.8 cm, angle a = 45 deg.
3. construct an isoceles triangle MNP such that base angle MNP is 30 deg. construct an incircle to this triangle and measure its radius.

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