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Complete the sentence: A parallelogram is a quadrilateral with two pairs of ________________ sides. parallel perpendicular skew proportional If a quadrilateral is a parallelogram, then its opposite SIDES are ... perpendicular and congruent parallel and half the measure parallel and congruent skew and congruent Complete the sentence: Consecutive angles (adjacent angles) of a parallelogram are _________________ supplementary. Sometimes Always Never FACT: Parallelograms diagonals bisect each other. D S 10 N 14 U T In ▱ STUD, TN = 14 and UN = 10. Find the following: SU = TD = FACT: Opposite angles of a parallelogram are congruent. Consecutive angles of a parallelogram are supplementary. Given ABCD is a parallelogram, find the measure of: m∠A = m∠C = m∠B = 71o degrees degrees degrees Given ABCD is a parallelogram, find the measure of: Perimeter ABCD = FACT: Opposite SIDES of a parallelogram are congruent. 12 DC = 16 Which fact about parallelograms will you use to answer this question? diagonal bisect each other. opposite sides are parallel opposite sides are congruent opposite angles congruent, consecutive angles are supplementary. ABCD is a parallelogram. Find the value of x and y C y A 130∘ (2x+10)∘ D x = y = B Given parallelogram ABCD, find each measure listed below. 33o 120o y x z x = y= z= Parallelogram ▱OLMN is shown. Find the value ofx and y. Then find ON. Which fact about parallelograms will you use to answer this? opposite sides are parallel opposite sides are congruent opposite angles are congruent, consecutive angles are supplementary diagonals bisect each other ON = x = y = Quadrilateral EFGH is shown. Given: m∠E = 110º. Determine what the measure of angles F, G and H would have to be, for EFGH to be a parallelogram. m∠G = º m∠F = º m∠H = º |