Question

___________ measurements can determine a quadrilateral uniquely.

Answer 1

Quadrilateral.

A quadrilateral is uniquely based on either of these following measurement

• When four sides and one diagonal are given.
• When two sides and three sides are given.
• When two adjacent sides and three angles are given
• When three sides and two included angles are given
• When four sides and one angle are given.

Anyway, it takes five measurements that can determine a quadrilateral uniquely.

Hence, Five measurements can determine a quadrilateral uniquely.