Scale Drawing Math

Scale Drawing Math:

Scale drawing math is a type of geometry is the foundation of geometric principle of relationship. Two figures are similar if that is the same shape even though they may have different sizes. Any figure is a similar to itself, so, in this specific case, the similar figures do actually have the same size as well as the same shape.In this article we shall discuss about the scale drawing math.

Can you predict how big an image will be as you change the distance between the projector and the screen?”

Have the students talk about what they know about using an overhead projector and what approach might they use to solve the problem of scale drawing Problem.

• Place a representation on the overhead and place the projector as close to the screen as possible.
• Measure the breadth of the representation and the space between the screen and the overhead. Verification the result values.
• Move the projector backside and do again step 2. Move the overhead more than a few times and verification the results.
• Using the data, encourage to the students to calculate the ratio.
• Return the projector to an original location, replace the image and measure.
• Dialogue with a students whether they could determine the width of the image.
• See check for correctness by using the relation from the previous image.

Scale Drawings Math Lesson Example 1:

The length of an object is drawn to scale. The scale of the drawing is 1:30.The object length of sketch on the paper is 12 inches, to calculate the object in real life.

Solution:

Length of a drawing 1

----------------------------- =---

Real length 30

Do a cross product by multiply the numerator of one fraction by the denominator of the other fraction

We get:

Length of drawing × 30 = Real length × 1

length of drawing = 12, we get:

12 × 30 = Real length × 1

360 inches = Real length.

Hope you like the above example of Scale Drawing Math.Please leave your comments, if you have any doubts.