Lines/Angles
What is a line?
A set of points that continues in both directions
An angle between 0-90 degrees is an _______________ angle.
Acute
What is a polygon?
A 2D shape made of straight lines.
What is an acute triangle?
A triangle with all acute angles.
What is geometry?
The study of shapes.
What is a point?
An exact location in space
An angle between 90-180 degrees is an ______________ angle.
Obtuse
A round shaped figure that has no corners or edges.
What is an obtuse triangle?
A triangle with an obtuse angle.
An angle that is exactly 180 degrees is a __________ angle.
Straight
What is a line segment?
Part of a line between two endpoints
An angle that is exactly 90 degrees is a _______________ angle.
Right
How many sides does a pentagon have?
5 sides
What is a right triangle?
A triangle with a right angle.
What is a scalene triangle?
A triangle with NO equal sides.
What is a ray?
Part of a line that has one endpoint and continues in one direction
What are parallel lines?
Lines that are the same distance apart and never cross.
How many sides does a decagon have?
10 sides
What is an isosceles triangle?
A triangle with 2 equal sides.
What are the characteristics of a trapezoid?
2 sides are parallel while 2 sides are not.
What is the difference between a line and a line segment?
A line continues in both directions, but a line segment has 2 endpoints
What are perpendicular lines?
Lines that intereact and form 4 right angles.
What are the characteristics of a parallelogram?
The sides are parallel are each pther
A triangle with ALL equal sides.
Why is a circle NOT a polygon?
It does not have any straight lines or corners.