The materials for typically focus on the properties and construction of parallelograms , which is a central topic for this grade level in standard curricula like those by Atanasyan or Merzlyak. Popular Workbook Solutions (Page 14)
: Identifying types of quadrilaterals or using the property that opposite sides and angles are equal. strapnitsa 14 po geometrii po rabochei tetradi 8 klass
: Opposite sides are equal, and opposite angles are equal. The materials for typically focus on the properties