Geometry Chapter 11 Review Flashcards

Questions and Answers

What is the area formula for a square?

side times side

s²

A = bh

Both B and C (correct)

What is the area formula for a rectangle?

A = lw

What is the area formula for a parallelogram?

A = bh

What is the area formula for a triangle?

A = 1/2bh Signup and view all the answers

What is the area formula for a trapezoid?

A = 1/2h(b1 + b2) Signup and view all the answers

What is the area formula for a rhombus?

A = 1/2d1 x d2 Signup and view all the answers

What is the area formula for a kite?

A = 1/2d1 x d2 Signup and view all the answers

What is the formula for the circumference of a circle?

C = πd or C = 2πr Signup and view all the answers

What is the arc length corollary?

In a circle, the ratio of the length of a given arc to the circumference is equal to the ratio of the measure of the arc to 360 degrees. Signup and view all the answers

Study Notes

Area Formulas

Area formula for a square is represented as A = s², where s is the length of the side.
For a rectangle, area is calculated using A = lw, with l being length and w being width.
The area of a parallelogram is given by A = bh, where b is the base and h is the height.
To find the area of a triangle, use A = 1/2bh, which is half the product of the base and height.
The area of a trapezoid can be determined with A = 1/2h(b1 + b2), where h is height and b1, b2 are the lengths of the two bases.
For a rhombus, area is calculated as A = 1/2d1 x d2, where d1 and d2 are the lengths of the diagonals.
The area of a kite is also given by A = 1/2d1 x d2, similar to the rhombus.

Circle Measurements

The circumference of a circle can be calculated using either C = πd or C = 2πr, where d is the diameter and r is the radius.

Arc Length

In a circle, the arc length is directly proportional to the angle it subtends at the center. The ratio of the arc length to the circumference equals the ratio of the arc's angle measure to 360 degrees.

Description

Prepare for your Chapter 11 Geometry test with these flashcards! This review covers key area formulas for various shapes such as squares, rectangles, parallelograms, triangles, and trapezoids. Mastering these concepts will help ensure your success on the exam.