Geometry Semester 1 Exam Review

Front

What is the definition of a midpoint in geometry?

Back

A midpoint is a point that divides a line segment into two equal parts.

Front

If RS > PQ, what does this imply about the lengths of segments RS and PQ?

Back

It implies that the length of segment RS is greater than the length of segment PQ.

Front

How do you calculate the distance between two points (x1, y1) and (x2, y2) in a coordinate plane?

Back

Use the distance formula: d = √((x2 - x1)² + (y2 - y1)²).

Front

What is the formula for combinations when choosing r items from n items?

Back

The formula is C(n, r) = n! / (r!(n - r)!).

Front

In an isosceles triangle, what can be said about the lengths of the two equal sides?

Back

The two equal sides are congruent, meaning they have the same length.

Front

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

Back

The sum of the interior angles of a triangle is always 180 degrees.

Front

What is the Pythagorean theorem?

Back

In a right triangle, the square of the length of the hypotenuse (c) is equal to the sum of the squares of the lengths of the other two sides (a and b): a² + b² = c².

Front

How do you find the area of a triangle?

Back

The area of a triangle can be found using the formula: Area = 1/2 * base * height.

Front

What does it mean for two segments to be congruent?

Back

Two segments are congruent if they have the same length.

Front

What is the definition of a scalene triangle?

Back

A scalene triangle is a triangle in which all three sides have different lengths.