Identify the geometric formulas for shapes common to carpentry.

Identification should include

• describing the characteristics of various types of angles and geometric shapes
• using the appropriate formula to calculate square footage (i.e., area) for rectangles, squares, triangles, and circles
• using the appropriate formula to determine perimeter, circumference, diameter, radius, volume, and angle (i.e., slope, grade) for various shapes.

Process/Skill Questions:

• What is the calculation for the hypotenuse of a triangle?
• How many degrees are in each angle of an octagon?
• Why is pi a crucial measurement? What is it, and how is it used in carpentry?

NCCER Core Curriculum: Introductory Craft Skills, 2015

00102-15 Introduction to Construction Math

Module Two (00102-15) introduces trainees to basic math skills needed in the construction environment. The module reviews whole numbers and fractions; working with decimals; the four primary math operations; reading rulers and tape measures; the Imperial and metric units of measurement; basic geometric figures; and area and volume calculations for two-dimensional and three-dimensional objects.