6-5 Conditions for Rhombuses, Rectangles, and Squares

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Presentation transcript:

6-5 Conditions for Rhombuses, Rectangles, and Squares Students will analyze quadrilaterals to determine if they are a rhombus, a rectangle, and/or a square based upon their previous knowledge of certain properties that are unique to rhombuses, rectangles, and /or squares. 6-5 Conditions for Rhombuses, Rectangles, and Squares To determine whether a parallelogram is a rhombus or a rectangle.

6-5 Quiz The following questions are to help you determine how well you understood today’s lesson. Please record the number you get right on your portfolio sheet Make sure you understand why you miss the ones that you do not get correct!

There is not enough information. 1. Parallelogram ABCD has the angle measures shown. Can you conclude that it is a rhombus, a rectangle, or a square? Explain. Parallelogram ABCD is a rhombus, because the diagonal bisects two angles. Parallelogram ABCD is a rectangle, because the diagonal creates congruent angles. Parallelogram ABCD is a square, because all four angles have the same measure. There is not enough information. Non-Response Grid

3 4 5 6 Non-Response Grid

18 16 14 12 Non-Response Grid

4. Lucinda wants to build a square sandbox, but she has no way of measuring angles. Explain how she can make sure that the sandbox is square by only measuring length. Arrange four equal-length sides so the diagonals bisect each other. Arrange four equal-length sides so the diagonals are equal lengths also. Make each diagonal the same length as four equal-length sides. Not possible; Lucinda has to be able to measure a right angle. Non-Response Grid

5. Give the name that best describes the parallelogram and find the measures of the numbered angles. The diagram is not to scale. Non-Response Grid

ASSIGNMENT: 6-5 p.386-387 #8-26 even Be sure to RATE your understanding of the lesson 4-3-2-1-0 after you finish it AND give me 2 complete sentences as to why you rated yourself that way.