Triangles
Has four sides, with all four sides congruent.
a rhombus
An angle greater than 90 degrees and less than 180 degrees.
What is obtuse?
Draw a parallelogram
*must include two sets of parallel lines
The type of triangle with no congruent sides or angles.
scalene triangle
Has four sides, with opposite sides congruent and parallel as well as opposite angles congruent.
a parallelogram
Define parallel
a set of lines that are equal in distance to each other but never touch. Like train tracks
Draw an example of an Isosceles Triangle
Must have two sides CLEARLY marked as the same length.
can include a right triangle as long as sides are same length
The type of triangle with one angle greater than 90 degrees.
an obtuse triangle
A four sided figure with one pair of parallel sides and one pair of congruent sides.
a (isosceles) trapezoid
An angle that is larger than 90 degrees
Obtuse angle
Draw an example of a concave polygon...
must include a shape that is caved in or dented...like a star.
The type of triangle with one 90 degree angle and two congruent sides.
a right isosceles triangle
A four sided figure with adjacent sides congruent
a rhombus
A closed 2D shape is called a...
Polygon
Draw a right equilateral triangle.
Not possible
A triangle with three angles less than 90 degrees.
an acute triangle
Four sided figure with four right angles and opposite sides parallel and congruent.
a rectangle or square
True or False: Any triangle with an obtuse angle must be scalene
False- can be isosceles
Any point that helps form an angle. It is created by the intersection of two lines, segments, rays or edges.
A vertex?
Draw a shape that has an angle of 180 degrees doubled.
a circle
a circle is 180+180