Line
Closed, flat figure made up of straight lines
How many lines of symmetry does a rectangle have?
2
Angle that measures 90 degrees
Right angle
At 3:00, what kind of angle do the hands of a clock form?
Right angle
Those lines cross each other at a right angle.
Perpendicular
Three sided polygon
Triangle
Has only one pair of parallel sides
Trapezoid
Straight angle
A square is a rectangle, but a rectangle is not a square because....
It doesn't have all equal sides
A part of a line with two endpoints.
Line segment
Five sided polygon
Pentagon
Opposite sides are parallel and all of the sides are the same length; it's not a square
rhombus
Angle that measures less than 90 degrees
Acute angle
At 4:15, what kind of angle do the hands of a clock form?
Acute angle
Train tracks make those line.
Parallel lines
Eight sided polygon
octagon
It has 4 right angles; it is also a parallelogram; the sides are not all equal
rectangle
Angle that measures more than 90 degrees but less than 180 degrees
Obtuse angles
Brianna draws an angle that measure 160 degrees. She then draws a ray that divides the angle into 2 equal parts and create two new angles. What is the measure of each new angle?
80 degrees
A shape that has neither parallel nor perpendicular line segments
triangle
Four sided polygon
quadrilateral
This shape has 6 different names. Name them all.
What is the measure of angle x?
50 degrees
John cuts a pizza pie into 45 degrees slices. How many slices were there?
8 slices