CIA 2 Review

Front

What is the congruency statement for angles?

Back

A congruency statement indicates that two angles are equal in measure, often written as

Front

If

Back

Front

What is the line of reflection across the x-axis?

Back

The line of reflection across the x-axis is a horizontal line where each point (x, y) is reflected to (x, -y).

Front

What happens to the coordinates of a point when it is reflected across the y-axis?

Back

The coordinates change from (x, y) to (-x, y).

Front

What is the result of rotating a point 90° counterclockwise about the origin?

Back

The coordinates of the point (x, y) become (-y, x).

Front

What is the rule for translating a point 6 units to the right and 4 units down?

Back

The translation rule is (x + 6, y - 4).

Front

How do you set up a proportion to find the measure of x in similar triangles?

Back

Set up the proportion as (length of side 1)/(length of side 2) = (corresponding length of side 1)/(corresponding length of side 2).

Front

What is the measure of an angle if it is congruent to another angle measuring 45°?

Back

The measure of the angle is also 45°.

Front

What does it mean for two angles to be complementary?

Back

Two angles are complementary if the sum of their measures is 90°.

Front

What is the formula for finding the distance between two points (x1, y1) and (x2, y2)?

Back

The distance formula is √((x2 - x1)² + (y2 - y1)²).