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Parallelograms and Triangles
Trapezoids, Rhombi, and Kites
Circles and Sectors
Regular Polygons and Composite Figures
Solve This!
100
Opposite sides of a parallelogram.
What is parallel?
100
The perpendicular distance between the bases of a trapezoid.
What is the height?
100
The locus or set of all points in a plane equidistant from a given point called the center.
What is a circle?
100
A segment drawn from the center of a regular polygon perpendicular to a side of the polygon. Its length is the height of an isosceles triangle that has two radii as legs.
What is an apothem?
100

Find the height of a trapezoid with base lengths of 4 and 19 feet, with an area of 115 square feet.

What is 10 feet?

200
Base times height.
What is the area of a parallelogram?
200
The formula for area of a trapezoid
What is 1/2 height(Base 1 + Base 2)?
200
Pi times radius squared.
What is the area of a circle?
200
The way to find the perimeter of a regular polygon.
What is side lengths times number of sides?
200

Find the area of an equilateral triangle with a side length of 14 inches. Round to the nearest tenth if needed.

What is 84.9 in^2

300
The formula for area of a triangle
What is 1/2 (Base times Height)?
300
The formula for the area of a rhombus or a kite
What is 1/2 (Diagonal 1 times Diagonal 2)?
300
A region of circle bounded by a central angle and its intercepted arc.
What is a sector of a circle?
300
The formula for finding the measure of the central angle of a regular polygon
What is 360/n?
300

Find the area of a circle with circumference of 20pi units. Write your answer using exact values.

What is 100pi units?

400
The length of an altitude drawn to a given base.
What is the height of a triangle?
400
A quadrilateral with exactly one pair of parallel sides.
What is a trapezoid?
400

The formula for area of a sector of a circle.

What is A = x/360 times pi times radius squared?

400
The angles of a triangle when the hypotenuse is twice the length of the short leg.
What is a 30, 60, 90 triangle?
400

The height of a parallelogram is six feet less than its base. Find the base if the area is 160 feet^2. 

What is 16 feet?

500
The area of a region is the sum of the areas of its nonoverlapping parts.
What is the Area Addition Postulate?
500
A quadrilataral with exactly two pairs of consecutive congruent sides.
What is a kite?
500
The length of the radius of a circle that has an area of 380 square inches.
What is roughly 11 inches?
500
The formula for the area of a regular polygon
What is One-half the product of the apothem times the perimeter?
500

Find the area of a regular octagon with a perimeter of 96 cm. Round your final answer to the nearest tenth if necessary.

What is 695.3 cm^2 ?