Geometry Final Review (Units 1-3)

Front

What is the reflection of point S(3, 7) across the y-axis?

Back

S'(-3, 7)

Front

How do you find the midpoint of the segment with endpoints (4, 12) and (-6, 14)?

Back

Midpoint = ((x1 + x2)/2, (y1 + y2)/2) = (-1, 13)

Front

If two lines are parallel and angle 1 measures 135°, what is the measure of angle 5?

Back

m∠5 = 135°

Front

What transformation occurs from triangle ABC to triangle A'B'C' if it is reflected across the x-axis?

Back

Reflection across the x-axis

Front

Translate point T(1, -7) using the rule (x, y) → (x + 2, y + 5). What is the new point?

Back

T'(5, 3)

Front

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

Back

Distance = √((x2 - x1)² + (y2 - y1)²)

Front

What is the area of a triangle with base b and height h?

Back

Area = (1/2) * b * h

Front

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

Back

180°

Front

What is the definition of parallel lines?

Back

Parallel lines are lines in a plane that never meet and are always the same distance apart.

Front

What is the definition of a midpoint?

Back

The midpoint is the point that divides a segment into two equal parts.