EXERCISE

Draw a rough sketch of  a quadrilateral $ABCD$.  Draw its diagonals. If $P$ is the point of intersection of the diagonals of $ABCD$, name the triangles having vertex $P$.

Draw a rough sketch of  a quadrilateral $ABCD$.  Draw its diagonals. If $P$ is the point of intersection of the diagonals of $ABCD$, how many triangles are there in total?

Draw a rough sketch of  a quadrilateral $EFGH$ and name the two pairs of opposite angles.  

Draw a rough sketch of  a quadrilateral $EFGH$ and name the two pairs of adjacent angles.  

Draw a rough sketch of  a quadrilateral $EFGH$ and name the two diagonals.  

Draw a rough sketch of  a quadrilateral $EFGH$ and name the side opposite to $\overline{EF}$.  

Draw a rough sketch of  a quadrilateral $EFGH$ and name the side adjacent to $\overline{FG}$.  

Draw a rough sketch of  a quadrilateral $EFGH$ and name the side adjacent to $\overline{EH}$.