Designed with Geometer's Sketchpad in mind . However, the statement that all parallelograms are rectangles is false. Opposite sides of parallelogram are equal and parallel but all angles are not equal only opposite angles are equal. So, All squares are parallelograms. Diagonals are congruent. Classify Quadrilateral as parallelogram A classic activity: have the students construct a quadrilateral and its midpoints, then create an inscribed quadrilateral. Krishnamurthy. Tags: Question 12 . Question 548775: Which is NOT always a property of a Parallelogram? These properties concern its sides, angles, and diagonals. Lv … Read this: The property that is NOT characteristic of a parallelogram is opposite sides are not congruent. 1. D. Opposite sides are perpendicular. 8 years ago. The consecutive angles are supplementary. The opposite sides are congruent. There is a point X in the plane of the quadrilateral with the property that every straight line through X divides the quadrilateral into two regions of equal area. Relevance. The properties of the parallelogram are simply those things that are true about it. (b) True. 2 Answers. Anonymous. Go with B. Then ask the students to measure the angles, sides etc.. of inscribed shape and use the measurements to classify the shape (parallelogram). Opposite angles are congruent. SURVEY . A quadrilateral with exactly one … Which of the following is not a property of all parallelograms? Relevance. C. The diagonals are perpendicular. The consecutive sides are congruent. Solutions: (a) False. Relevance. 1 Answer. The parallelogram has the following properties: Opposite sides are parallel by definition. Answer Save. It has been illustrated in the diagram shown below. Get your answers by asking now. Asked 10/8/2015 9:06:14 AM. Favorite Answer. All of the angles are congruent. A ll rectangles are not squares but a ll squares are rectangles. Properties of Parallelogram. A. A rectangle is a parallelogram because all of its sides are parallel, but a parallelogram is not a rectangle because it does not have all right angles. Still have questions? All sides and angles of a square are equal. 3) opposite sides are congruent. All of the sides are congruent. Question. Consecutive angles are supplementary. Which property is NOT true for all parallelograms? That is true. A. Opposite sides are congruent. Answer Save. The diagonals bisect each other. Log in for more information. B. it … B. 60 seconds . 1) diagonals are congruent. Which property is true of all parallelograms? Consecutive angles are supplementary. Property 1 : If a quadrilateral is a parallelogram, then its opposite sides are congruent. Which property is true of all parallelograms? Thus all parallelograms have all the properties listed above, and conversely, if just one of these statements is true in a simple quadrilateral, then it is a parallelogram. 4) opposite angles are congruent. Lv 7. Opposite angles are congruent. (g) All parallelograms are trapeziums. Property that is characteristic of a parallelogram is that opposite sides are congruent. Opposite sides are congruent. C. Consecutive sides are parallel. Consecutive angles are congruent. Answer Save. Which of the following properties is not true for all parallelograms? Sue. No. 0 0. A. Diagonals that bisect each other B. Diagonals that bisect opposit angles C. Two pairs of opposite congruent sides D. Two pairs of opposite congruent angles Answer by jim_thompson5910(35256) (Show Source): 4 Answers. 9 years ago. One has to be on the lookout for double negatives. answer choices . Q. 2) consecutive angles are supplementary . (h) All squares are trapeziums. 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