Introduction to Scale Drawings

Intro to Scales

​A SCALE DRAWING is a diagram/map/model of an object that is too large or too small to draw. The dimensions are proportional to the actual dimensions (distances) of the real-life example. *Maps, blue prints, floor models are some examples.

​The SCALE on a scale drawing is the ratio of the drawing lengths

or model to its corresponding actual lengths.

Open Ended

What is an example that might use a scale drawing or scale measure?

Multiple Choice

$$\Delta PQR\ is\ similar\ to\ \Delta STU$$  What side corresponds to side UT?

• PQ

• RQ

• QR

• QP

Multiple Choice

Which statement is true?

• $$\angle A\ =\angle E$$

• $$\angle F=\angle B$$

• $$\angle E=\angle B$$

• $$\angle C=\angle D$$

Fill in the Blanks