Write the Word or Phrase That Best Completes Each Statement $72 ^ { \circ }$

Essay

Write the word or phrase that best completes each statement or answers the question.
-Penrose tiles are formed from a rhombus WXYZ with sides of length 1 and interior angles $72 ^ { \circ }$ and $108 ^ { \circ }$ . (Refer to the illustration.) $A$ point $O$ is chosen on the diagonal 1 unit from $Y$ . Line segments $O X$ and $O Z$ are drawn to the o vertices. The two resulting tiles are called a kite (figure $\mathrm { OXYZ }$ ) and a dart (figure $\mathrm { OXWZ }$ ). Find the area of the kit and the dart tile, correct to the nearest $0.01$ .