The given following statements are- 1. Angularity number: It defines the percentage of voids in the aggregate after proper compaction. 2. Angular aggregate are superior to rounded aggregate from the following two reasons are ● Angular aggregate exhibit a better interlocking effect in concrete ● It is having a greater surface area, the angular aggregate may show higher bond strength than rounded aggregate. 3. The surface texture depends upon the hardness, grain size, porosity of parent rock and subsequent exposure to force of attrition.