Circles
Area
Triangle
Angles
Polygons
100
Half of the diameter
What is the radius?
100
bh=A
What is the formula for the area of any polygon?
100
3
What is the number of sides, vertices, and angles in a triangle?
100
Anything below 90°
What is an acute angle?
100
Must be closed, have at least three sides, and can only intersect at endpoints.
What makes a polygon?
200
C÷π
What is diameter?
200
πd=A or πr2=A
What is the formula of a circle's area?
200
Scalene Triangle
What is a triangle with three different sides?
200
90°
What is a right angle?
200
Equiangular (all angles are congruent) and Equilateral (all sides are congruent)
What is a regular polygon?
300
d÷2
What is radius?
300
bh2=A or bh½=A
What is the area of a triangle?
300
180°
What is the angle total of a triangle?
300
Anything above 90°
What is an obtuse angle?
300
You can connect any two end points and the line hits outside the polygon
What is concave?
400
πd
What is the formula for circumference?
400
Identify the simpler shapes in the complicated figure, then find the individual areas and and them together
How to find the area of an irregular polygon?
400
A triangle where all three angles are smaller than 90°
What is an acute triangle?
400
An angle that is exactly 180°
What is a straight angle?
400
You can connect any two end points and the line is always inside the polygon
What is convex?
500
πr²÷4=A
What is the formula to find the area of a fourth of a circle?
500
h((b+b'2')÷2)=A
What is the formula for the area of a trapezoid?
500
A triangle where the two base angles are the same
What is an isosceles triangle?
500
The meeting point in an angle
What is a vertex?
500
360°
What is the angle total of every polygon?
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