Math 8 Ch. 2 Flashcard #2 Review

Front

What is the result of reflecting the point (-5,2) over the y-axis?

Back

(5,2)

Front

What is the value of x if the equation leads to x = 10?

Back

10

Front

When translating the point (x - 4, y), how many units does it move horizontally?

Back

4 units left

Front

What value of x proves that lines r and s are parallel when cut by a transversal?

Back

43 degrees

Front

How do you find the measure of one interior angle in a regular polygon?

Back

Use the formula (n-2) * 180 / n, where n is the number of sides.

Front

What is the definition of a transversal in geometry?

Back

A transversal is a line that intersects two or more lines at different points.

Front

What happens to the coordinates of a point when it is translated 4 units left?

Back

The x-coordinate decreases by 4.

Front

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

Back

180 degrees.

Front

How do you determine if two lines are parallel using angles?

Back

If corresponding angles are equal, the lines are parallel.

Front

What is the definition of reflection in geometry?

Back

Reflection is a transformation that flips a figure over a line.