a. 5.4 Assessment Target 30: I can use the properties of parallelograms to determine if a quadrilateral is a parallelogram. 1. Are the following quadrilaterals parallelograms? Explain. W X (4x + 13)° (3x+20). Z 2. What value of x makes the following quadrilateral a parallelogram? 2a + 14 a (4x - 1)° 2b M (5x − 8)° b. 78° 5a - 4 Name: 3. Determine the values of a and b that make the following quadrilateral a parallelogram. 78° 102° Hour #: a = b =​