Apply proportional reasoning and formulas to geometry. You'll work with scale drawings, angle relationships, the circumference and area of circles, and the surface area and volume of 3-D figures.
Each topic is a short page: read the walkthrough, watch the video, try the practice, then take a quick quiz. Go in order or jump to what you need.
Use a scale factor to relate a drawing to the real object.
Use complementary, supplementary, vertical, and adjacent angles to find unknowns.
Use π with the radius and diameter to measure circles.
Find how much space a solid fills and the total area of its faces.
By the end of this unit, you should be able to:
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