So the first thing we can make out from here is that it is for sure a parallelogram as each pair of opposite sides are equal. Who mostly settled in Georgia. Quadrilateral Geometry Lesson Plans Quadrilaterals Geometry Lessons A quadrilateral with no right-angles would be a rhombus or parallelogram A rhombus has four sides with opposite corner angles equal. . The sum of the interior angles of a quadrilateral are equal to 360. This preview shows page 245 - 248 out of 361 pages. Their opposite sides are parallel and congruent and all angles are congruent. Quadrilateral figure which is longer than it is broad. A rectangle is a parallelogram with four right angles so all rectangles are also parallelograms and quadrilaterals. IXL is easy online learning designed for busy parents. A rectangle is a special parallelogram that has 4 right angles. The other thing we can conclude is that it is either a square or a rhom