What is the difference between a line and a line segment?
A line continues on forever while a line segment has two end points (only a "Segment" of an entire line).
What is an angle? How do we measure them?
An angle is a figure created by two rays or two line segments, connected at a common vertex.
They are measured in degrees by using a protractor
What can we conclude about them?
The vertical angles opposite each other have equal measurements.
What are the characteristics of a triangle
3 sides, angles, and vertices
What is a quadrilateral?
Any 4 sided polygon
Define "Ray"
A ray has one endpoint and extends forever in one direction.
An acute angle has a measure....
less than 90 degrees
When two lines intersect and create a right angle they are...
perpendicular
The interior angles of a triangle add up to...
180 degrees
How is a rectangle different from a square? How are they the same?
A square has all right angles, equal sides, and opposite sides are parallel.
A rectangle has all right angles, opposite sides are parallel, and opposite sides are equal but not all 4 are equal
How many endpoints does a "line" have?
None! It extends infinitely
An obtuse angle has a measure...
more than 90 degrees
Two angles that add up to 180 are....
Two angles that add up to 90 are...
Supplementary
Complementary
A triangle with no equal sides is called...
scalene
The interior angles of a quadrilateral add up to...
360 degrees
Give a real-world example of a line, line segment, and a ray.
Teacher will judge
What is it called when an angle is more than 180 but less than 360?
Reflex Angle
Describe alternate interior angles or draw a diagram
Teacher will judge
A triangle with all 3 equal sides also has all equal angles.
True or False
True
Name the quadrilateral that has all equal sides but does not have right angles.
rhombus
What does it mean if two points are collinear?
The points are on the same line
Creates a straight line, 180 degrees
Describe corresponding angles or draw a picture
Corresponding angles have equal measurements and occupy the same relative position
Define right triangle, obtuse triangle, and acute triangle.
right triangle = has one right angle
obtuse triangle = has one obtuse angle
acute triangle = has all acute angles
Name the quadrilateral that only has ONE pair of parallel sides.
Trapezoid