Geometry

Terms in this set (22)

Quadrilateral
You are a flat shape with four straight sides. I am the most open club of all!
Trapezoid
you are a four sided figure with one pair of parallel sides.
Parallelogram
You are a 4-sided flat shape with straight sides where opposite sides are parallel.
Rectangle
You are a 4-sided flat shape with straight sides where all interior angles are right angles (90°).
Also opposite sides are parallel and of equal length.
Rhombus
You are a 4-sided flat shape with straight sides where all sides have equal length.

Also opposite sides are parallel and opposite angles are equal.
Square
A 4-sided flat shape with straight sides where:
• all sides have equal length, and
• every interior angle is a right angle (90°)

I am the snobbiest of clubs!
Right Triangle
I am a triangle with one right angle.
Equilateral Triangle
I am a triangle and I have sides that are all the same length
Isosceles Triangle
I am a triangle and I have two equal sides.
Scalene Triangle
I am a triangle and I have no equal sides
Obtuse Angle
An angle greater than 90º but less than 180º
Acute Angle
An angle less than 90º
Right Angle
An angle that is exactly 90º
Reflex Angle
An angle that is greater than 180º
Straight Angle
An angle that is exactly 180º
Ray
A straight line with only one end point. My length cannot be measured.
Parallel Lines
Two lines that always stay the same distance apart. We can never touch
Perpendicular Lines
When two lines meet, they form right angles
Line segments
My length can be measured. I have two end points
Point
I am a location in space. It only takes one letter to name me
Vertex
I am the point where two lines meet to make an angle.
Angle
I am measured in degrees. I have a vertex. My sides are two rays.
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