Unit 3 Review

Front

What is the height of Marvin if his son is 3 ft tall and casts a shadow of 1 ft while Marvin casts a shadow of 2.5 ft?

Back

7.5 ft

Front

If two triangles are similar, what can be said about their corresponding sides?

Back

The ratios of the corresponding sides are equal.

Front

What is a proportion?

Back

When two ratios are equivalent and show the same value.

Front

Are two shapes similar if their corresponding sides have different ratios?

Back

No, the ratios of the corresponding sides are not equal.

Front

If the distance between two cities on a map is 4.125 inches and the scale is 2 inches = 40 miles, what is the actual distance?

Back

82.5 miles

Front

What is the formula to find the height of an object using similar triangles?

Back

Height of object = (Height of shadow) * (Height of object with known shadow) / (Length of shadow of known object)

Front

If a triangle has sides of lengths 3, 4, and 5, what type of triangle is it?

Back

It is a right triangle.

Front

What does it mean for two ratios to be equivalent?

Back

It means they represent the same relationship or proportion.

Front

How do you determine if two triangles are similar?

Back

If their corresponding angles are equal or their corresponding sides are in proportion.

Front

What is the scale factor in a map if 1 inch represents 20 miles?

Back

The scale factor is 20 miles per inch.