Geometry Terms
Angles
Polygons
Triangles
Quadrilaterals
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
A quadrilateral with one pair of parallel sides.
What is a trapezoid?
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
The total number of degrees in every quadrilateral.
What is 360 degrees?
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
Any parallelogram with all four sides the same length.
What is a rhombus?
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 octagon?

400
The missing angle if a triangle has angles measuring 45, 90, and ______ degrees.
What is 45 degrees?
400
The missing measurement of a quadrilateral with these angles: 50 degrees, 98 degrees, 75 degrees, and __________.
What is 137 degrees?
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
Visual Clue: The two names used to classify this triangle.
What are acute and scalene?
500
Three shapes that are also parallelograms.
What are squares, rectangles, and rhombuses?
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