Lesson 1 6 Polygons Ohio Content Standards Ohio

Lesson 1 -6 Polygons

Ohio Content Standards:

Ohio Content Standards: • Formally define geometric figures.

Ohio Content Standards: • Use coordinate geometry to represent and examine the properties of geometric figures.

Ohio Content Standards: • Make and test conjectures about characteristics and properties (e. g. , sides, angles, symmetry) of two-dimensional figures and three-dimensional objects.

Vocabulary

n: P o g y l o Vocabulary

n: P o g y l o Vocabulary A closed figure formed by a finit number of segment

n: P o g y l o Vocabulary A closed figure formed by a finit number of segment

C c n o : e av Vocabulary

C c n o : e av Vocabulary A polygon that “caves in on itself.

C c n o : e av Vocabulary A polygon that “caves in on itself.

C v n o : x e Vocabulary

C v n o : x e Vocabulary A polygon that does not “cave” in.

C v n o : x e Vocabulary A polygon that does not “cave” in.

C v n o : x e Vocabulary A polygon that does not “cave” in.

g n : n o Vocabulary

g n : n o Vocabulary A polygon with “n” sides.

r a l : u g on e R lyg Po Vocabulary

r a l : u g on e R lyg Po Vocabulary A convex polygon which all sides and angles are congruent

r e b m u N : s e d i s of Polygons:

r e b m u N : s e d i s of Polygons: triangle 3

r e b m u N : s e d i s of Polygons: quadrilateral 4

r e b m u N : s e d i s of Polygons: pentagon 5

r e b m u N : s e d i s of Polygons: hexagon 6

r e b m u N : s e d i s of Polygons: heptagon 7

r e b m u N : s e d i s of Polygons: octagon 8

r e b m u N : s e d i s of Polygons: nonagon 9

r e b m u N : s e d i s of Polygons: decagon 10

r e b m u N : s e d i s of Polygons: dodecagon 12

Name each polygon by the number of sides. Then classify it as convex or concave, regular or irregular.

Name each polygon by the number of sides. Then classify it as convex or concave, regular or irregular.

Name each polygon by the number of sides. Then classify it as convex or concave, regular or irregular.

Vocabulary

Vocabulary : r e t e Perim

Vocabulary : r e t e Perim The sum of the lengths of the polygon sides.

A masonry company is contracted to lay three layers of decorative brick along the foundation for a new house given the dimensions below.

A masonry company is contracted to lay three layers of decorative brick along the foundation for a new house given the dimensions below. 30 ft 8 ft 36 ft 40 ft 12 ft 36 ft 24 ft

A masonry company is contracted to lay three layers of decorative brick along the foundation for a new house given the dimensions below. 30 ft 8 ft 36 ft 40 ft 12 ft 24 ft 36 ft Find the perimeter of the foundation and determine how many bricks the company will need to complete the job. Assume one brick is 8 inches long.

A masonry company is contracted to lay three layers of decorative brick along the foundation for a new house given the dimensions below. 30 ft 8 ft 36 ft 40 ft 12 ft 24 ft 36 ft The builder realizes he accidentally halved the size of the foundation, so he reworks the drawing with the correct dimensions. How will this affect the perimeter of the house and the number of bricks needed?

Find the perimeter of pentagon ABCDE with A(0, 4), B(4, 0), C(3, -4), D(-3, -4), and E(-3, 1).

Find the perimeter of pentagon ABCDE with A(0, 4), B(4, 0), C(3, -4), D(-3, -4), and E(-3, 1).

The width of a rectangle is 5 less than twice the length. The perimeter is 80 centimeters. Find the length of each side.

Assignment: Pgs. 49 - 50 11 -24 all, 28 -34 evens 40 -44 evens