Math 7 Checkpoint #3 Review

Front

What does it mean for two triangles to be similar?

Back

Two triangles are similar if their corresponding angles are equal and the lengths of their corresponding sides are proportional.

Front

What is a proportion in mathematics?

Back

A proportion is an equation that states that two ratios are equal.

Front

What is the square root of a number?

Back

The square root of a number is a value that, when multiplied by itself, gives the original number.

Front

What is the square root of 1?

Back

1

Front

How do you perform operations with negative numbers?

Back

When subtracting a negative number, it is equivalent to adding the positive version of that number.

Front

What is the order of operations in mathematics?

Back

The order of operations is Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right), often abbreviated as PEMDAS.

Front

How do you calculate the scale of a drawing?

Back

To calculate the scale, compare the dimensions in the drawing to the actual dimensions, often expressed as a ratio.

Front

If 2 inches represents 9 feet in a scale drawing, how do you find the actual length from the drawing?

Back

Use the ratio: Actual Length = (Length on Drawing) * (Actual Feet / Inches). For example, 8 inches would represent 36 feet.

Front

What are corresponding sides in similar triangles?

Back

Corresponding sides are the sides of two triangles that are in the same relative position.

Front

If triangle STV is similar to triangle ZXY, what are the corresponding sides?

Back

ST corresponds to ZX, TV corresponds to XY, and SV corresponds to ZY.