Math

Determine whether each statement is always, sometimes or never true.

_____ 16. A rhombus is a parallelogram
_____ 17. A parallelogram is a rhombus
_____ 18. A trapezoid is a rectangle
_____ 19. A square is a rectangle
_____ 20. A rectangle is a square

1. 👍 0
2. 👎 0
3. 👁 117

1. 👍 0
2. 👎 0
2. I'm not really sure about some of them, but I tried my best on it. Here's what I put.

Sometimes 16. A rhombus is a parallelogram
Never 17. A parallelogram is a rhombus
Never 18. A trapezoid is a rectangle
Always 19. A square is a rectangle
Never 20. A rectangle is a square

1. 👍 0
2. 👎 0
3. 18 and 19 are correct.

rhom·bus
a parallelogram with opposite equal acute angles, opposite equal obtuse angles, and four equal sides.
any parallelogram with equal sides, including a square.

Squares, Rectangles and Rhombuses are all Parallelograms!

1. 👍 0
2. 👎 0
4. So is it...

16. Always
17. Sometimes
20. Sometimes

1. 👍 0
2. 👎 0
5. Yes.

1. 👍 0
2. 👎 0

Similar Questions

1. Geometry

Why is this statement NOT always true?: The longer diagonal of the rhombus is perpendicular to two sides of the rhombus.

asked by Sunshine on February 10, 2013
2. Math

which statement is a true statement? All rectangles are squares All squares are rectangular •• Every rhombus is a rectangle Every rectangle is a rhombus Correct me if I'm wrong!!

asked by Vanessa on February 5, 2016
3. Math

Which statement is a true statement? A All rectangles are squares. B All squares are rectangles. C Every rhombus is a rectangle. D Every rectangle is a rhombus. I thought it was A, but I'm awful with.. almost all types of

asked by Brien on February 3, 2016
4. Math

I'm confused about a question on a math test. The question is: Which statement is a true statement? The answer choices are: A. All rectangles are squares B. All squares are rectangles C. Every rhombus is a rectangle D. Every

asked by DustyRose<3 on January 13, 2017
5. geometry theorems

I have six questions which will be on a test two weeks from now, and I do not understand. Help me find out these theorems for the blanks. 1. If one pair of consecutive sides of a parallelogram are congruent, then the parallelogram

asked by mhaidar9108 on February 13, 2008
6. Math

Which of the following statements is not always true? A. In a rhombus, the diagonals bisect opposite angles. B. In a rhombus, the diagonals are perpendicular. C. In a rhombus, the diagonals are congruent. D. In a rhombus, all four

asked by anon on January 4, 2014
7. Algebra II

In an induction proof of the statement 4+7+10+...+(3n-1)=n(3n+5)/2 the first step is to show that the statement is true for some integers n. Note:3(1)+1=1[3(1)+5]/2 is true. Select the steps required to complete the proof. A)Show

asked by Jon on December 15, 2007
8. geometry

Which of the following statements is not always true? A. In a rhombus, the diagonals bisect opposite angles. B. In a rhombus, the diagonals are perpendicular. C. In a rhombus, the diagonals are congruent. D. In a rhombus, all four

asked by Destiney on April 16, 2015
9. Mte 180

Is a rhombus regular because the sides are congruent is this statement true or false. Explain reasoning,

asked by Nicki on July 13, 2012
10. MAth

Which statement is a true statement all rectangles or squares all squares or rectangles every rhombus is a rectangle every rectangle is a rhombus

asked by Brooke on January 26, 2017

More Similar Questions