Geometry Terms
Angles
Polygons
Triangles
Circles
100
A straight path of points that goes on forever in both directions.
What is a line?
100
An angle measuring 90 degrees.
What is a right angle?
100

A 4-sided polygon.

What is a quadrilateral?

100
The number of degrees in every triangle.
What is 180 degrees?
100

The number of degrees in a circle

What is 360 degrees?

200
A part of a line that has one endpoint and extends forever in one direction.
What is a ray?
200
An angle measuring less than 90 degrees.
What is an acute angle?
200
A 5-sided polygon.
What is a pentagon?
200
These are the three types of triangles according to their angles.
What is acute, obtuse, and right?
200

A line segment connecting any two points on a circle, but does not need to pass through the center.

What is a chord?

300
An exact location.
What is a point?
300
An angle measuring more than 90 degrees.
What is an obtuse angle?
300
A 6-sided polygon.
What is a hexagon?
300
These are the three types of triangles according to their sides.
What are equilateral, isosceles, and scalene?
300

A chord that goes through the center of a circle.  

What is a diameter?

400
A part of a line that has 2 endpoints.
What is line segment?
400
A tool used to measure angles.
What is a protractor?
400
An 8 sided polygon

What is an octogon?

400
The missing angle if a triangle has angles measuring 45, 90, and ______ degrees.
What is 45 degrees?
400

A segment from the center of a circle to any point on the circle. 

What is a ray?

500
Lines that intersect and form square corners.
What are perpencicular lines?
500
The point where two lines meet and form an angle.
What is a vertex?
500
By definition, a polygon must have these two characteristics.
What are straight lines and a closed figure?
500

A triangle with angles that are 70, 65, and 45 degrees and sides that are 6 cm, 7 cm, and 11 cm.

What are acute and scalene?

500

The distance around a circle or the perimeter of a circle.

What is the circumference?

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