1. A Mathematician Travels to the South in the 1920s Study of Shapes and Proportion in Southern Architecture

2. What shapes do you see?

3. Did you find these shapes? Square Rectangle Triangle Pentagon Quadrilateral Polygon

4. What geometry words can you use to describe the photo?

5. Did you use these descriptive words? Parallel Right angle Congruent Adjacent Perpendicular Opposite Angle

6. Proportion Challenge If the doors to this African-American church in South Carolina are seven feet tall, then how tall is the church from the bottom of the porch to the tip of the steeple?

7. Set up your proportion: actual height -------------------- picture height actual: 7 feet tall doors -------------------------------------------- = picture: measure height of doors Actual: X feet tall steeple ----------------------------------------------- Picture: measure height of church

8. Measure the height of the doors and the steeple: Use the centimeter ruler to measure the heights of the doors and the steeple. Plug your measurements into the proportion that you set up. You are ready to solve the proportion!

9. Solve Your Proportion You may cross-multiply. You may use the “algebra method.” You may use the “basic math method.”

10. What’s your guess? How tall is the church?

11. Shady Grove Baptist Church in Alabama or Tennesee

12. Brainstorm With Math Words What math words do you know that describe this photo?