The measure of the region enclosed by the plane figure.
What is area?
100
What does "s" represent in the formula for a regular polygon?
Side length
100
A = bh
What is the area of a rectangle and parallelogram?
100
What is the formula for the area of a circle?
A=PI*r^2
100
True or False: Capital A represents the same thing as lowercase a.
False
200
Any segment from one side of a parallelogram that is perpendicular to a line through the opposite side.
What is the altitude?
200
The region between two radii and an arc of the circle.
What is a sector of the circle?
200
What is the area formula for a triangle?
A=(1/2)bh
200
What is the formula for the circumference?
A=2*PI*r
200
True or False: The altitude can be inside or outside the parallelogram. No matter where you draw the altitude to a base, its height should be the same, because the opposite sides are parallel.
True
300
To discover a new formula from an already known formula.
What is derive?
300
The region between two concentric circles.
What is an annulus of a circle?
300
What is the area formula for a trapezoid?
A=(1/2)(b1 + b2)h
300
What is the formula for the area of a segment?
A=(a/360)*PI*r^2 - (1/2)bh
300
What shape can you create from a circle in order to derive the formula for the area of a circle?
A triangle or parallelogram
400
What does the "a" represent in the area formula for a regular polygon?
The apothem.
400
A region between a chord and an arc of the circle.
What is a segment of a circle?
400
What is the area formula for a kite?
A = (1/2)d1*d2
400
What is the formula for the area of an annulus?
A=PI*R^2 - PI*r^2
400
True or False: In order to find the surface area of an object, it is necessary to find the surface area of the base and each face then multiply the results.
False
500
The perpendicular segment from the center of a regular polygon's circumscribed circle to a side of the polygon.
What is the apothem?
500
What does the "a" represent in the area formula for a sector of a circle?
The angle measure.
500
What is the area formula for the sector of a circle?
A=(a/360)*PI*r^2
500
Area = area of the base + area of each face
What is surface area?
500
If the formula for the area of a regular polygon is A=(1/2)*nsa, what is this same formula in terms of the perimeter?