Triangles
Angles
Lines and Line Relationships
Real-life
Polygons
100
What is a triangle with one 90 degree angle called?
right triangle
100
What is an angle that measures 90 degrees?
right angle
100
What is a pair of lines that will never intersect, because they are the same distance apart at every point called?
parallel lines
100
What geometry word best describes the tip of a pencil?
a point
100
What is a polygon with four sides called?
quadrilateral
200
What is a triangle with all three angles measuring less than 90 degrees?
acute triangle
200
What is an angle that measures less than 90 degrees?
acute angle
200
What is a pair of lines called that form a 90 degree angle when they intersect?
perpendicular lines
200
What geometry word can be used to describe something with a definite start and end point, like a pencil?
line segment
200
What is a polygon with 5 sides called?
pentagon
300
What is a triangle that has one angle that measures more than 90 degrees?
obtuse triangle
300
What is an angle that measures more than 90 degrees?
obtuse angle
300
What are lines that cross each other called?
intersecting lines
300
What geometry word can be used to describe the light that shines starting at the sun and going out for what seems like forever?
ray
300
What is a polygon with 6 sides called?
hexagon
400
What is is one way to classify a triangle?
angles/sides
400
What is an angle that measures 180 degrees?
straight angle
400
What is a set of points that come together to form a path called?
a line
400
What geometry word best describes the surface of your desk?
plane
400
What is a 7-sided polygon called?
heptagon
500
What is a three-sided polygon called?
triangle
500
What is the point at which two rays meet to form an angle?
vertex
500
Perpendicular lines can also be classified as what kind of lines?
intersecting lines
500
What is the word that combines the meanings "earth" and "to measure".
geometry
500
What is an 8 sided polygon called?
octagon
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