Shapes
Angles
More Shapes
Circles
Vocabulary
100
What shape has 3 sides?
Triangle
100
this angle is between 0 and 90
acute
100

a shape with 3 or more sides closed figure made up of line segments

polygon

100
the point in the middle of a circle
center
100

two lines that cross

intersecting lines

200

A shape that has 4 equal sides and 4 right angles

Square

200
this angle is exactly 90 degrees
right angle
200
what is a shape with 5 sides
pentagon
200
the line from the center to any point on the circle
radius
200

angles opposite of each other through a pair of crossing lines are called this

vertical angles

300

this shape has 4 right angles and two pairs of equal sides

Rectangle

300
this angle is exactly 180 degrees
straight angle
300
this shape is made up of points that are all the same distance from the center
circle
300
a line from any point on the circle through the center to another point on the circle
diameter
300

two lines that never cross

parallel lines

400
this shape has 2 sets of parallel sides
parallelogram
400
this angle is between 90 and 180 degrees
obtuse
400
how many right interior angles does a square have
4
400
the perimeter of a circle
circumference
400
angles that are inside a shape
interior angles
500

this shape has one pair of parallel bases

trapezoids

500

the point(s) where two lines meet

vertex or vertices

500
a polygon that has equal sides and equal angles
Regular polygon
500

how many sides does a circle have

0... or infinite?

500

this word means equal or the same (for shapes, lines, etc but not numbers)

congruent

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