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)
Depending on which author's workbook you are using, the content on page 14 generally includes: : Topic : Properties and signs of a parallelogram. strapnitsa 14 po geometrii po rabochei tetradi 8 klass
: Identifying types of quadrilaterals or using the property that opposite sides and angles are equal. The materials for typically focus on the properties
: Parallelogram properties or potentially early similarity concepts. and opposite angles are equal.
: Opposite sides are equal, and opposite angles are equal.