3.1.1-3.1.4 Flashcardizz Review**

Front

What does it mean for triangles to be similar?

Back

Triangles are similar if their corresponding angles are equal and their corresponding sides are in proportion.

Front

How do you set up a proportion to solve for a missing variable?

Back

To set up a proportion, you can use the relationship between corresponding sides of similar triangles or the relationship between two ratios.

Front

What is the algebraic rule for dilating a point by a factor of 1/3?

Back

The algebraic rule for dilating a point (x, y) by a factor of 1/3 is (1/3x, 1/3y).

Front

If a wall casts a shadow of 6 ft and is 4 ft tall, how do you find the height of a tree with a 24 ft shadow?

Back

Set up a proportion: 4 ft / 6 ft = height of tree / 24 ft.

Front

What is the solution to the proportion 4/6 = h/24?

Back

The height of the tree (h) is 16 ft.

Front

What does the notation △PAW ~ △LET signify?

Back

It signifies that triangle PAW is similar to triangle LET.

Front

How do you identify corresponding angles in similar triangles?

Back

Corresponding angles in similar triangles are equal.

Front

If PA ~ LT, what can be inferred about the sides PA and LT?

Back

The lengths of sides PA and LT are in proportion.

Front

What is the value of p in the proportion 4/5 = p/20?

Back

p = 16.

Front

How do you solve for a variable in a proportion?

Back

Cross-multiply and then isolate the variable.