Show:
Lines
Angles
Polygons
Triangles
Quadrilaterals
100
How many times do parallel lines cross?
zero
100
What type of angle is smaller than a right angle?
acute
100
What is the name of a polygon with 5 sides?
Pentagon
100

What does the prefix Tri- mean?

Three

100
What is 1 type of quadrilateral that has 4 equal sides?
Rhombus or square
200
What is the name of a line with two points on the end?
Line segment
200
What type of angle is bigger than a right angle?
Obtuse
200
What is the name of a polygon with 6 sides?
Hexagon
200

Triangles can only be identified by their angles.

True or False?

False. Triangles can also be identified by their sides.

200
How many sets of parallel sides does a parallelogram have?
2
300
What is the difference between a line and a line segment?
A line has arrows on the end and it goes on forever. A line segment has points on both ends and starts and stops.
300

What is an angle called when it measures exactly 90 degrees?

Right Angle

300
What are the two attributes, or properties of polygons?
Polygons are closed and made of line segments.
300
What type of triangle has 3 sides that are the same length?
Equilateral
300
What are two other special names for a square?
Parallelogram, rhombus, rectangle
400
What is in the middle of intersecting lines where they cross?
A point
400

What is an angle called when it measures exactly 180 degrees?

Straight Angle

400
Can a triangle ever be a quadrilateral? Why or why not?
No because a triangle always has 3 sides and a quadrilateral always has 4 sides.
400
What kind of triangle has no sides that are the same length?
Scalene
400
Is a trapezoid a type of parallelogram? Why or why not?
No because a trapezoid has 1 set of parallel sides and a parallelogram has 2 sets of parallel sides.
500
Describe what a ray looks like.
A line with an endpoint on one end and an arrow on the other end.
500

Name all four types of angles we use in Geometry.

Straight, Right, Acute, and Obtuse

500
Why isn't a circle a polygon?
It's not made of line segments.
500
What type of triangle has two sides that are the same length?
Isosceles
500
Why is a square a rectangle?
It has 2 sets of parallel sides and has 4 right angles.