6. Draw adjacent angles and their bisector. How big is angle between the bisectors of those angles?

7. Draw a rectangle. Bisect the angles. Mark the bisectors` connecting point with letter O. Measure the distance of O from the angles of the rectangle. What do you notice?

8. Define the criteria of the congruent triangles: SSS, SCS, CSC.

9. Can you draw the triangle if the sides are 4 cm, 2 cm and 8 cm. Explain!

10. One side of a triangle is 6 cm the others form 80% of it. Draw the triangle. Measure the angles and find the circumference of the triangle.

11. There is triangle ABC, whose side AB=5 cm and the adjacent angles are 45 and 50. Draw the triangle, bisect sides AC and BC. Join the points you got and measure the length of the segment.