Lesson 1.7Find Perimeter,

Circumference, and Area

Objective

• Find dimensions of polygons

Standard

• 8.0 – students know, derive, and solve problems involving the perimeter, circumference, area, volume, lateral area, and surface area of common geometric figures.

• 10.0 – Students compute areas of polygons, including rectangles, scalene triangles, equilateral triangles, rhombi, parallelograms, and trapezoids.

Academic Language

• Perimeter• Circumference• Area• Diameter• Radius

Perimeter

• Distance around a figure

What dimension is perimeter?

Circumference

• Distance around a circle

What dimension is circumference?

Area

• Amount of surface covered by a figure

What dimension is area?

Square

Rectangle

Triangle

Circle

Example

Indie Practice

Practice

Area?

Unit conversion

• 3 feet = 1 yard

• 1 yd2 = 32 ft2

Quickwrite

• Write what you learned today using appropriate academic language.

• Describe what your studying process will be for the upcoming exam.

Homework

• p.52 #1, 5, 7, 10, 18, 24, 28, 42