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Covering And Surrounding

Practice identifying types of triangles: obtuse, right, isoleses and equilateral. Learn how to find the area of a triange and use the Pythagoran Theorem to find the length of the hypotenuse.

Identify different polygons. Learn to find the perimeter of a rectangle and the area of a rectangle.

Circle: find the circumference and the area.

Review what you've learned about geometry

Area and Perimeter

### Covering and Surrounding

Concept with Explanation
Selected Homework from ACE

In Covering and Surrounding student work with investigations leads them to:

• Understand area and relate area to covering a figure;

• Understand perimeter and relate perimeter to surrounding a figure;

• Develop strategies for finding areas and perimeters of rectangular shapes and non-rectangular shapes;

• Discover relationships between perimeter and area. including that each can vary while the other stays fixed;

• Understand how the areas of simple geometric figures relate to each other (e.g. the area of a parallelogram is twice the area of a triangle with the same base and height);

• Develop formulas and procedures-stated in words and/or symbols-for finding areas and perimeters of rectangles, parallelograms, triangles, and circles;

• Develop techniques for estimating the area and perimeter of an irregular figure; and

• Recognize situations in which measuring perimeter or area will help answer practical questions.