What is this called?
A ray
How many sides does a quadrilateral have?
4
Draw a pair of parallel lines
=
What type of angle is this angle?

Obtuse
How many degrees is a right angle?
90 degrees
Which polygon has 4 sides?
quadrillateral
rhombus
Which quadrilateral has 2 pairs of parallel sides, and 4 right angles?
rectangle
You can classify and name triangles by their _________ and their ________.
angles and sides
What is this called?
Line Segment
Draw an obtuse angle and estimate it's measurement.
Greater than 90 degrees, less than 180.
What type of angle is 90 degrees?
right angle
A triangle with all equal side lengths is...
equilateral
True or False: Intersecting lines create right angles
False
True or False: A trapezoid is a kind of parallelogram
False
Shapes are congruent when they are the same ________ and __________.
shape and size
Draw a pair of perpendicular lines.
+ L
A trapezoid has ______ pair(s) of parallel sides.
one
What do we call a pair of lines that make 90 degree angles when they cross?
perpendicular lines
(4)
How is an acute angle different than an right angle?
An acute angle is smaller than a right angle (less than 90 degrees)
What is an equilateral triangle?
equal sides & equal angles
What shape is a quadrilateral, parallelogram, rectangle and rhombus?
Square
True
Explain: A square is always a rectangle, but a rectangle is not a square.
To be a rectangle, a shape needs 2 pairs of parallel sides and 4 right angles, a square has both of those so it is also a rectangle.
A square also needs to have 4 equal sides, a rectangle does not have 4 equal sides, so a rectangle is not a square.