Geometry Semester 1 Final exam

Front

What is the value of x when two lines intersect to form an angle of 25 degrees?

Back

x = 25

Front

What is the result of a 90° counterclockwise rotation about the origin on triangle PQR?

Back

Triangle P'Q'R' is the image of triangle PQR after the rotation.

Front

Back

Front

How do you find the coordinates of a point after reflecting it across both the x and y axes?

Back

Change the sign of both coordinates.

Front

What is the midpoint formula for finding the coordinates halfway between two points?

Back

Front

What is the definition of a trapezoid?

Back

A trapezoid is a quadrilateral with at least one pair of parallel sides.

Front

What is the formula for the area of a triangle?

Back

Front

What is the definition of a perpendicular line?

Back

Two lines are perpendicular if they intersect at a right angle (90 degrees).

Front

What is the effect of a 90° clockwise rotation on the coordinates of a point (x, y)?

Back

The new coordinates will be (y, -x).

Front

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

Back