Mr. R.’s World of Math


my mother's ring

rhombus green  
When daddy asked to marry mom,
She asked him for a ring,
Daddy rushed off to the mall,
To buy some blingy thing!
Mommy opened up the box,
And much to her surprise,
She found a ring that was a square,
And tears came to her eyes…
ring with a squre
(nobody wants a square ring!!!)
But square rings can be special,
My dad explained with pride,
A rhombus is a special shape,
He flipped square to the side…
diamond ring
A rhombus is a diamond too,
At least, it is, I think,
I know it’s parallelogram,
Like our kitchen sink!
Mom was filled with so much joy,
She laughed a silly laugh,
I’ll marry you this very day,
You’re so great at math!

A rhombus is a quadrilateral with four equal length sides.
A square is a rhombus that has 4 equal angles and 4 equal length sides.
Every rhombus is a parallelogram. Unlike the ‘rhombus ring’ in this poem, not all diamond shaped objects are rhombuses. The term diamond is sometimes used to describe shapes even if they don’t have equal length sides.


If a rhombus has an angle of 60 degrees, what are the measures of all 4 angles of the rhombus?

Can a rectangle (with 2 sides of different lengths) be a rhombus?


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