Geometry Final Exam REVIEW

Front

What is the formula for the area of a sector of a circle?

Back

Area = (θ/360) * π * r², where θ is the angle in degrees and r is the radius.

Front

How do you reflect a point across the y-axis?

Back

To reflect a point (x, y) across the y-axis, change the sign of the x-coordinate: (x, y) becomes (-x, y).

Front

What is the formula for the area of a triangle given its vertices?

Back

Area = 1/2 * |x1(y2 - y3) + x2(y3 - y1) + x3(y1 - y2)|, where (x1, y1), (x2, y2), (x3, y3) are the vertices.

Front

What is the formula for the area of a rectangle?

Back

Area = length * width.

Front

What is the formula for the volume of a cone?

Back

Volume = (1/3) * π * r² * h, where r is the radius and h is the height.

Front

What is the Pythagorean theorem?

Back

In a right triangle, a² + b² = c², where c is the hypotenuse.

Front

How do you calculate the perimeter of a triangle?

Back

Perimeter = side1 + side2 + side3.

Front

What is the formula for the area of a circle?

Back

Area = π * r², where r is the radius.

Front

What is the relationship between the radius and diameter of a circle?

Back

Diameter = 2 * radius.

Front

How do you find the length of a line segment between two points (x1, y1) and (x2, y2)?

Back

Length = √((x2 - x1)² + (y2 - y1)²).