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Angles
Lines
More lines and angles
Polygons
Circles
100
This tool helps us to draw and measure angles.
What is a protractor?
100
This is an infinite number of points that are alingned with each other
What is a line?
100
Two lines that intersect at exactly a 90 degree angle.
What are perpendicular lines?
100
A triangle with all three sides congruent.
What is am equilateral triangle?
100
The middle of the circle is called the ___________.
What is the center?
200
The endpoint of the angle.
What is a vertex?
200
Part of a straight line that starts and stops at specific points.
What is a line segment?
200
The angles that are formed by two intersecting lines.
What are vertical angles?
200
A quadrilateral with four congruent sides and four right angles..
What is a square?
200

A straight line drawn from the center of the circle to one point on the circle.

What is a radius?

300
An angle less than 90 degress.
What is an acute angle?
300
Part of a line that has one end point and goes on in one direction
What is a ray?
300
Two angles that share a vertex and one side.
What are adjacent angles?
300
A polygon with eight sides.
What is an octagon?
300
A line segment twice the size of the raius that goes through the center of the circle.
What is the diameter?
400
An that is greater than 90 degress.
What is an obtuse angle?
400
Lines that meet at only one point.
What are intersecting lines?
400

Two angles that total exactly 90 degress.

What are complementary angles?

400
A triangle with three sides of different lengths.
What is a scalene triangle?
400
There are _____________ degrees in a circle.
What is 360?
500
The total of all angles in a triangle.
What is 180 degress?
500
Lines that will never intersect.
What are parallel lines?
500
Two angles that total exactly 180 degrees.
What are supplementary angles?
500
A quadrilateral with on pair of parallel sides.
What is a trapezoid?
500
The distance around the outside edge of the circle.
What is the circumference?