Unit 1 Review

Front

What is the bisector of a given angle?

Back

A line or ray that divides the angle into two equal parts.

Front

What is a perpendicular bisector?

Back

A line that divides a segment into two equal parts at a 90-degree angle.

Front

What are rigid motions?

Back

Transformations that preserve distance and angle measures, including rotation, reflection, and translation.

Front

What is dilation in geometry?

Back

A transformation that alters the size of a figure but not its shape.

Front

What is the rule for translating a point (x, y) to the left by 2 and up by 6?

Back

(x - 2, y + 6) is the translation rule.

Front

What does it mean to reflect a shape over the Y-axis?

Back

The X-coordinates of the points of the shape change sign, while the Y-coordinates remain the same.

Front

What is the difference between an angle bisector and a perpendicular bisector?

Back

An angle bisector divides an angle into two equal angles, while a perpendicular bisector divides a segment into two equal lengths at a right angle.

Front

What is the result of reflecting a triangle over the X-axis?

Back

The Y-coordinates of the triangle's vertices change sign.

Front

What is the definition of midpoint in geometry?

Back

The point that divides a segment into two equal parts.

Front

What is the formula for finding the midpoint of a segment with endpoints (x1, y1) and (x2, y2)?

Back

Midpoint = ((x1 + x2)/2, (y1 + y2)/2).