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Geometry Terms
Angles
Polygons
Triangles
Quadrilaterals
100

This means "equal" when talking about geometry shapes.  For example, if all sides of a polygon are the same length, they are called _______________.

What is congruent?

100
An angle measuring 90 degrees.
What is a right angle?
100
A 4-sided polygon.
What is a quadrilateral?
100
These are the three types of triangles according to their angles.
What is acute, obtuse, and right?
100
A quadrilateral with one pair of parallel sides.
What is a trapezoid?
200

All sides and angles of a polygon are not congruent, it is called this.

What is an irregular polygon?

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 sides.
What are equilateral, isosceles, and scalene?
200

A quadrilateral with 0 sets of parallel sides, but has two sets of congruent sides.

?What is a kite?

300

Lines that will never cross are called this.

What is parallel?

300
An angle measuring more than 90 degrees.
What is an obtuse angle?
300
A 6-sided polygon.
What is a hexagon?
300

A triangle with all angles less than 90 degrees.

What is an acute triangle?

300

Any parallelogram with all four sides the same length (congruent).  There are 2.  Name both.

What is a rhombus and a square?

400

Lines that cross but don't form 90 degree angles are called this.

What is intersecting?

400
A tool used to measure angles.
What is a protractor?
400
The term used to describe a polygon having all equal sides and equal angles.
What is a regular polygon?
400

A triangle with two sides congruent.

What is isoscolese?

400

This quadrilateral has 2 sets of parallel lines, but no 90 degree angles:  a parallelogram and a _____________.

What is a rhombus?

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 three characteristics.

What are straight lines, three or more sides, and is a closed figure?

500

A triangle with no sides congruent and one angle bigger than 90 degrees.  (2 names)

What is an obtuse scalene triangle?

500
Three shapes that are also parallelograms.
What are squares, rectangles, and rhombuses?