Triangles
Angles
Lines
Planes
Misc
100
A triangle with one 90 degree angle
What is a Right triangle?
100
Measuring less than 90 degrees.
What is an acute angle?
100
Part of a line that extends infinitely in one direction.
What is a ray?
100
A specificed location, that which has no part.
What is a point?
100
The number of measurements needed to fully describe a shape.
What are the dimensions?
200
A triangle with three equal sides.
What is an Equilateral triangle?
200
Measuring more than 90 degrees.
What is an obtuse angle?
200
A section of a line bounded by endpoints.
What is a line segment?
200
A set of points that are in the same plane.
What is a coplanar point?
200
A circular or semi-circular tool that is used to measure an anlge in degrees.
What is a protractor?
300
A triangle with two equal sides.
What is an Isosceles triangle?
300
Two angles whose vertices are directly opposite.
What is a vertical angles?
300
Two lines that never intersect and form a 90 degree angle with a third line.
What are parallel lines?
300
A set of points that are on the same line.
What is a collinear point?
300
A proof that begins with a given information.
What is a direct proof?
400
A triangle with no equal sides.
What is a Scalene triangle?
400
Angles that are in between two parallel lines that is intersected by a transversal.
What is an interior angles?
400
A line that intersects two or more lines in different points.
What is a transversal?
400
The common endpoints of two rays or two line segments.
What is a vertex?
400
The size of the region enclosed by a three-dimensional figure (multiply its lenght, width, and height).
What is the volume?
500
Having equal parts, same size, and same shape.
What is congruent?
500
An angle that forms a linear pair with an angle that is inside a polygon.
What is an exterior angle?
500
Lines that contain the same point.
What is a concurrent?
500
A two-dimensional surface that is flat, without boundaries.
What is a plane?
500
A self-evident statement (accepted as true without need for proof).
What is a postulate?
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