Bisecting of an angle, criteria of the congruent triangles
 

1. The property of the bisector: ............................................................................
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2. Draw an angle 130°. Mark it, bisect the angle and point out C on the bisector. Measure the distance of C from the legs. What do you notice?

 

 

 

3. Divide 160° angle into four equal parts.

 

 

4. Divide the 12 cm segment into four equal parts.

 

 

5. Draw an angle that is 75% of the straight angle.