Unit 4 - measure

Question 1

What is an arc?

Answer 1

Fraction of a circle’s circumference

Question 2

What is a sector vs segment ?

Answer 2

Sector - fraction of a circle’s area (pizza shaped)
Segment - fraction of circle’s area created by chord

Question 3

What is a chord?

Answer 3

Line crossing a circle at any given point

Question 4

Formula of different graphs

Answer 4

Linear graph: y=mx+c (straight)
Quadratic graph: y=ax^2 + bx + c (parabola, curved)
Reciprocal = a/x (never meeting lines)
Graph moves up if number is added’ stretches in the direction of the y axis if multiplied; flips upside down if multiplied by a negative number