Quarter 2 Summative Exam Review

Front

What are the coordinates of a point after a 180° clockwise rotation about the origin?

Back

To find the new coordinates (x', y') of a point (x, y) after a 180° rotation about the origin, use the formula: (x', y') = (-x, -y).

Front

What is the result of reflecting a point over the line y = -1?

Back

To reflect a point (x, y) over the line y = -1, the new y-coordinate is calculated as: y' = -1 - (y + 1) = -2 - y.

Front

What is a perpendicular bisector?

Back

A perpendicular bisector of a segment is a line that divides the segment into two equal parts at a 90° angle.

Front

How do you find the value of x when given segments that are equal?

Back

Set the expressions for the segments equal to each other and solve for x.

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

If m∠ABC = (3x - 4)° and m∠DEF = (x + 10)°, what is the equation to find x if they are complementary?

Back

Set up the equation: (3x - 4) + (x + 10) = 90.

Front

What is the formula for the length of a segment when given the lengths of two segments that are equal?

Back

If TG = 4(x - 2) and SG = 3(x + 6), then TS = TG + SG.

Front

What is the significance of the point of intersection of the perpendicular bisector?

Back

The point of intersection of the perpendicular bisector is equidistant from the endpoints of the segment.

Front

How do you determine the coordinates of a point after a reflection over the x-axis?

Back

To reflect a point (x, y) over the x-axis, the new coordinates are (x, -y).

Front

What is the relationship between the slopes of two perpendicular lines?

Back

The slopes of two perpendicular lines are negative reciprocals of each other.