Week 12 Test

Front

What is the value of x and y in the given problem?

Back

x = 22°, y = 108°

Front

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

Back

A = π·r²

Front

What is the value of x if it is given as 127.2 degrees?

Back

x = 127.2°

Front

How do you find the value of an arc DC if it is given as 122 degrees?

Back

Arc DC = 122°

Front

What is the value of x if it is given as 12?

Back

x = 12

Front

What is the relationship between the angles in a triangle?

Back

The sum of the angles in a triangle is always 180°.

Front

How do you calculate the circumference of a circle?

Back

C = 2πr, where r is the radius.

Front

What is the definition of a radius in a circle?

Back

A radius is a line segment from the center of the circle to any point on the circle.

Front

What is the definition of an arc in a circle?

Back

An arc is a portion of the circumference of a circle.

Front

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

Back

Area of sector = (θ/360) × πr², where θ is the angle in degrees.