Lines and Rays
Angles
Triangles
Riddles
Quadrilaterals
100
an exact location in space
What is a point?
100
an angle that forms a square in a corner
What is a right angle?
100
a polygon with three sides and three angles
What is a triangle?
100

I have hands and a face but can't hold anything or smile.

What is a clock. 

100
a polygon with four sides and four angles
What is a quadrilateral?
200
a straight path of points that continues without end in both directions
What is a line?
200
an angle that forms a line
What is a straight angle?
200
a triangle with three angles that each measure less than 90 degrees
What is an acute triangle?
200

Kate's mother has three children: Snap, Crackle, and _____. 

Who is Kate.

200
at least one pair of parallel sides
What is a trapezoid?
300
a part of a line between two endpoints
What is a line segment?
300
an angle that is less than a right angle
What is an acute angle?
300
an angle with one angle that measures more than 90 degrees
What is an obtuse triangle?
300

I have to be broken before I can be used. 

I am an egg.

300
2 pairs of parallel sides and 2 pairs of sides of equal length
What is a parallelogram?
400
a part of a line that has one endpoint and continues without end in one direction
What is a ray?
400
an angle that is greater than a right angle, and less than a straight angle
What is an obtuse angle?
400
a triangle that has one angle that measures exactly 90 degrees
What is a right triangle?
400

I have many keys but cannot open a single lock. 

I am a piano. 

400
2 pairs of parallel sides and four sides of equal length
What is a rhombus?
500
How is a line different from a line segment or a ray?
a line continues without end in both directions


a line segment has two endponts

a ray has one endpoint and continues without end in only one direction

500

90 degrees

180 degrees

> 90 degrees

< 90 degrees


What is right angle, straight angle, acute angle, and obtuse angle?

500
How many triangles have at least two acute angles?  Explain
Acute triangle has 3


Obtuse triangle has 2

Right triangle has 2

500

I am the only place where today comes before yesterday. 

I am a dictionary. 

500
2 pairs of parallel sides, 2 pairs of sides of equal length, and 4 right angles
What is a rectangle?
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