POLYGONS

Polygon Facts

100

regular quadrilateral

What is a square?

200

an angle that is more than 180 degrees

What is concave

300

polygon with congruent angles and congruent sides

What is a regular polygon?

400

a polygon such that no line containing a side of the polygon contains a point in the interior of the polgon

What is a convex polygon?

500

a line going from one vertex to another non-adjacent vertex 

What is a diagonal?

Polygon anatomy

100

The length from the centre to the vertex

What is the radius?

200

The length from the centre to the midsection of a side.

What is the apothem?

300

How many diagonals are in a hexagon?

What is 9?

400

How many congruent isosceles triangles are in a heptagon?

What is 7?

500

How many diagonals are in a decagon? 

What is 35?

Polygon Angles

100

This is the formula to find the sum of the measures of the interior angles of any n-gon

What is (n-2) x 180

200

This regular polygon has exterior angles that each measure 45 degrees

What is an octagon?

300

This is the sum of the interior angles of a polygon with 10 sides

What is 1440 degrees?

400

This is true about the angles of a regular polygon.

What is congruent or equal measure?

500

This is the measure of each interior angle in a regular pentagon.

What is 108 degrees?

Area For Regular

100

This is the area formula of a regular polygon.

What is (P x a)/2?

200

area of a pentagon with base 8 inches and height 5 inches

What is 100 square inches?

300

area of a hexagon with a side that measures 16 inches an apothem of 10 inches?

What is 480 square inches?

400

area of a heptagon with a side measuring 7 inches with an apothem of 5 inches?

What is 122.5 square inches?

500

area of a decagon with bases of 26 cm and a height of 5 cm

What is 650 square centimetres?

Area for Irregular

100

a parallelogram with height 14m and base 6m 

What is 84m²?

200

a rectangle with base 230mm and a height of 15mm 

What is 3450mm²?

300

a rhombus with lateral diagonal 3cm and longitudinal diagonal 4cm

What is a 6cm²?

400

a parallelogram with base 17mm, a side length of 15mm, and an altitude of 14mm 

What is a 238mm²?

500

a trapezoid with top length 5cm, bottom length 9cm, side length 10cm, altitude 8cm

What is a 56cm²?