Unit 4 Review (Vocabulary + Conjectures)

B. 360 degrees It does not matter how many sides there are.

Exterior angles of a polygon add up to... A. 180 degrees B. 360 degrees C. 720 degrees D. It depends on the number of sides

A&B C&D

List two pairs of base angles in the isosceles trapezoid shown.

A&C B&D

List two pairs of consecutive angles in the isosceles trapezoid shown.

...congruent.

Opposite angles of a parallelogram are...

ONLY A is true.

The midsegment of a trapezoid is represented by...(Select all that apply.) A. The average of the two bases B. The sum of the two bases C. 180 - (the length of the longer base) D. Half the length of the longer base

...all sides and all angles congruent. (Eg. a square)

A regular polygon is one that has...

...supplementary (add up to 180 degrees).

Consecutive angles of a parallelogram are...

A&D are true. (We can think of the other "base" of a triangle as having a length of zero, so the average is the same as just dividing the base by two.)

The midsegment of a triangle is represented by...(Select all that apply.) A. The average of the two bases B. The sum of the two bases C. 180 - (the length of the base) D. Half the length of the base

B. They bisect each other. (Diagonals are only congruent for RECTANGLES and SQUARES & diagonals are only perpendicular for RHOMBI and SQUARES.)

What is always true about the diagonals of a parallelogram? (Select all that apply.) A. They are congruent. B. They bisect each other. C. They are perpendicular. D. None of the above.

A, B, C, E, & F are all true. (D is only true for RECTANGLES and SQUARES.)

Which of the following statements are true about all parallelograms? (Select all that apply.) A. Opposite sides are congruent. B. Opposite angles are congruent. C. They are quadrilaterals. D. Diagonals are congruent. E. Diagonals bisect each other. F. They have two pairs of parallel sides.

A, C, D, & F are all true. (B and E are true for TRAPEZOIDS.)

Which of the following statements are true about all rhombi? (Select all that apply.) A. Opposite sides are congruent. B. They have exactly one pair of parallel sides. C. They are quadrilaterals. D. Diagonals are perpendicular. E. They have congruent base angles. F. They have 90 degree angles.