Review for Finals 5: Isosceles Triangles; Similar Polygons

Front

What is an isosceles triangle?

Back

A triangle with at least two sides of equal length.

Front

What is the sum of the interior angles of a triangle?

Back

180 degrees.

Front

If two angles of a triangle are equal, what type of triangle is it?

Back

Isosceles triangle.

Front

What is a scalene triangle?

Back

A triangle with all sides of different lengths.

Front

How do you find the missing angle in a triangle?

Back

Subtract the sum of the known angles from 180 degrees.

Front

What is the relationship between similar polygons?

Back

They have the same shape but different sizes; corresponding angles are equal and corresponding sides are in proportion.

Front

What is a proportion in mathematics?

Back

An equation that states that two ratios are equal.

Front

If the sides of two similar triangles are in the ratio 5:2, what does this mean?

Back

For every 5 units of length in one triangle, the corresponding side in the other triangle is 2 units.

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height.

Front

What is the definition of corresponding angles?

Back

Angles that are in the same position in two different shapes.