*Learning Goal: Apply understanding of sector area to an inquiry-based task and explore the similarities and differences between arc length and sector area.*

# 3 Act Math

# Classwork

- Warm Up / Task Handout
- Practice
- Some parts taken from New Visions

# Standards:

**Common Core**- HSG.C.B.5 – Derive using similarity the fact that the length of the arc intercepted by an angle is proportional to the radius, and define the radian measure of the angle as the constant of proportionality; derive the formula for the area of a sector.

**TEKS**

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