Lesson 6.4 proving quadrilaterals are parallelograms

Lesson 6.4 Proving a quadrilateral is a parallelogram

By Mr. Gwartney

Multiple Choice

• Yes. It has 2 sets of congruent sides

• No. The diagonals are not congruent.

• Yes. The diagonals are congruent.

• No. The two pair of congruent sides are not opposite of each other. Adjacent congruent sides do not create parallelograms.

Multiple Choice

• Yes. Angle Q and R are congruent and angle S and P are congruent.

• No. The angles are not congruent.

• Yes. Angle Q and S are = to 140 degrees and angle P and R are = to 40 degrees.

• No.Angle Q and S are not congruent. Angle P and R are not congruent.

Multiple Choice

• Yes. AB is congruent to CD. BC is congruent to AD.

• No. AB is congruent to CD but BC is NOT congruent to AD.

• Yes. AB & CD are 17 and BC & AD are 6.

Multiple Choice

• No. Not enough information.

• Yes. Angle D = 153 degrees.

• Yes. Angle D = 27 degrees.

• No. The interior angle sum does not equal 360 degrees.

Multiple Choice

• No. The adjacent angle sets are not both 180 degrees.

• Yes. All adjacent angles are supplementary.