Geometry Fall Semester Exam 24-25

Front

What is the definition of a ray in geometry?

Back

A ray is a part of a line that starts at a point and extends infinitely in one direction.

Front

What are vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always equal.

Front

How do you find the measure of an angle in a triangle?

Back

The sum of the interior angles of a triangle is always 180 degrees. You can find an unknown angle by subtracting the sum of the known angles from 180 degrees.

Front

What is a midsegment in a triangle?

Back

A midsegment is a line segment that connects the midpoints of two sides of a triangle. It is parallel to the third side and half its length.

Front

If angle A measures 100°, what is the measure of its supplementary angle?

Back

The supplementary angle measures 80°, since supplementary angles add up to 180°.

Front

What is the formula for the sum of the interior angles of a polygon?

Back

The sum of the interior angles of a polygon with n sides is given by the formula: (n - 2) * 180°.

Front

How do you identify complementary angles?

Back

Complementary angles are two angles whose measures add up to 90°.

Front

What is the relationship between the angles in a linear pair?

Back

Angles in a linear pair are adjacent and their measures add up to 180°.

Front

What is the definition of an isosceles triangle?

Back

An isosceles triangle is a triangle that has at least two sides of equal length.

Front

How do you calculate the length of a midsegment in a triangle?

Back

The length of a midsegment is equal to half the length of the third side of the triangle.