Angles
Triangles & Quadrilaterals
Other Polygons
Points, Lines, Segments, and Rays
Parallel, Perpendicular and Skew lines

100
This kind of angle measures less than 180 degrees but more than 90 degrees.
What is an obtuse angle?
100
This is a parallelogram with all sides congruent.
What is a rhombus?
100
This is a five sided polygon.
What is a pentagon?
100
This is an exact location in space. It has no size and you name it with a capital letter.
What is a point?
100
lines that lie in the same plane but do not intersect
What are parallel lines?
200
This pair of angles adds to 180 degrees.
What are supplementary angles?
200
This is a quadrilateral with only one pair of parallel sides.
What is a trapezoid?
200
This is any polygon with ten sides.
What is a decagon?
200
This is a part of a line with two endpoints.
What is a segment?
200
Lines that intersect to form 90 degree angles.
What are perpendicular lines?
300
These angles are found in the same relative location -- either when lines are intersected by another line or when looking at two similar figures.
What are corresponding angles?
300
This type of triangle has no angles or sides congruent.
What is a scalene triangle?
300
This is a shape that has three or more line segments that do not cross.
What is a polygon?
300
These lines have no points in common. These lines will never intersect.
What are parallel lines?
300
These must be congruent in similar figures, they lie on the same side of the transversal and are either below or above the parallel lines.
What is their corresponding angles?
400
These angles share a vertex, have sides that are parts of the same two lines, and are always congruent.
What are vertical angles?
400
This type of quadrilateral has all the properties of parallelograms, rectangles, and rhombuses.
What is a square?
400
A stop sign is an example of this type of polygon.
What is an octagon?
400
These points lie on the same line.
What is collinear points?
400
If a similar figure is the same size as well as the same shape, then it is called this.
What is congruent?
500
The two acute angles in a right triangle always have this relationship, as they must add up to 90 degrees.
What is complementary?
500
This triangle has at least two angles congruent.
What is an isosceles triangle?
500
The Department of Defense in Washington, DC, is housed in a building that has this shape.
What is a pentagon?
500
This consists of one endpoint and all the points of a line on one side of the endpoint.
What is a ray?
500
A line that intersects two or more lines.
What is transversal?
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