MERRY, Alan <br/><br/>
Circles, factors, triangles, congruency, rotational symmetry, tessellation, parallel lines and -- 

 - s.p. 
 - 1993 No. 142, mar. 
 = MATHEMATICS TEACHING 
<br/><br/><label>Encabezamiento--Término de Indización: </label>ACTIVIDADES RECREATIVAS GEOMETRIA SIMETRIA