Test 6 :)

Front

What does it mean for two triangles to be similar?

Back

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

Front

What is the scale factor in similar triangles?

Back

The scale factor is the ratio of the lengths of corresponding sides of two similar triangles.

Front

If the scale factor of two similar triangles is 5:6, how do you find the perimeter of the smaller triangle if the perimeter of the larger triangle is known?

Back

To find the perimeter of the smaller triangle, multiply the perimeter of the larger triangle by the ratio of the smaller triangle's scale factor to the larger triangle's scale factor.

Front

What is the SSS similarity criterion for triangles?

Back

The SSS (Side-Side-Side) similarity criterion states that if the corresponding sides of two triangles are in proportion, then the triangles are similar.

Front

What is the SAS similarity criterion for triangles?

Back

The SAS (Side-Angle-Side) similarity criterion states that if two sides of one triangle are in proportion to two sides of another triangle and the included angles are equal, then the triangles are similar.

Front

How do you find the value of a variable in similar triangles?

Back

Set up a proportion using the lengths of corresponding sides and solve for the variable.

Front

What is the perimeter of a triangle with sides in the ratio 2:6:7 and a total perimeter of 195 meters?

Back

The longest side is 91 meters.

Front

How do you determine the measure of angles in a triangle given their ratio?

Back

To find the measure of each angle, divide the total degrees in a triangle (180 degrees) by the sum of the ratio parts and multiply by each part of the ratio.

Front

What is the measure of the smallest angle in a triangle with angles in the ratio 3:10:7?

Back

The smallest angle measures 27 degrees.

Front

What is the relationship between the perimeters of similar triangles?

Back

The ratio of the perimeters of similar triangles is equal to the ratio of their corresponding sides.