Types of quadrilaterals

Author:
Mathguru
On the screen, we can see some points in blue color and 4 points Q, R, S and T in black color. One quadrilateral is drawn by joining the given black points. Let us move these black points in such a way that they lie on the blue points and make a few different quadrilaterals. Let us observe what type of quadrilateral these points make under different conditions
1. Set that 4 black points as Q=O, R=C, S=A, T=G what do we observe? 2. Set that 4 black points as Q=K, R=N, S=A , T=E what do we observe? ….. 3. Set that 4 black points as Q=I, R= N, S= B, T=C what do we observe? 4. Set that 4 black points as Q=I, R=N , S= B, T=G what do we observe? 5. Set that 4 black points as Q=K, R= M, S= B, T=H what do we observe? 6. Set that 4 black points as Q=M, R=H, S=U, T=K what do we observe? 7. Set that 4 black points as Q= M, R=D, S= E, T=L what do we observe? 8. Set that 4 black points as Q=O, R=B, S=H, T=I what do we observe? 9. Set that 4 black points as Q= L, R=N, S=V, T=J what do we observe?