Vocab
A line has 2 arrows and a ray has 1
What does it mean for angles/lines to be congruent?
They are the same measure/length
What is one way to name an angle?
3 letters, 1 letter (only if the angle has 1 vertex), a number
What does equilateral mean for polygons?
A polygon where all sides are equal length
A radius is half the length of the diameter
Draw the angle ABC.
Draw the angle on the board (B is the VERTEX!!)
What is a midpoint (or draw a picture)?
The midpoint is point that is the same distance from each endpoint (the middle)
Draw an example of an acute angle.
Any angle with degrees less than 90
What is a regular polygon?
A polygon that is equilateral and equiangular
How do I name a circle?
The center point
What does the word bisect mean?
To cut in half
Draw the ray AR
Draw it on the board
What does it mean for 2 angles to be supplementary?
They add up to 180 degrees.
How do you name a polygon?
What is the difference between a minor and major arc?
A minor arc is an arc that is less than half the circle and a major arc is an arc that is greater than half the circle
Draw a diameter and chord on a circle.
Draw the circle
What does equiangular mean?
A polygon in which all the angles are the same
2 angles that share a common vertex and one common side and their noncommon side forms a line
What is the difference between convex and concave polygons?
Concave: At least 1 diagonal outside the polygon
Convex: No diagonal outside the polygon
What is the arc of the circle? (you can also draw an arc)
2 points on the circle and the part of the circle in between those 2 points
What does it mean for 2 angles to be complimentary?
Their degrees add up to 90.
Draw a trapezoid and label parallel lines.
Draw the trapezoid
What are vertical angles?
They share a common vertex, but not a common side. Formed by intersecting lines.
How do I know if 2 polygons are congruent?
Their corresponding sides and angles are the same
The measure of an arc is the same as the _______?
Central angle