Unit 5 Test Review

Front

What is the circumcenter of a triangle?

Back

The circumcenter is the point where the perpendicular bisectors of the sides of a triangle intersect. It is equidistant from all three vertices of the triangle.

Front

In a parallelogram, what is the relationship between opposite angles?

Back

In a parallelogram, opposite angles are equal.

Front

How do you find the value of y in a triangle given two angles?

Back

To find the value of y, use the fact that the sum of the angles in a triangle is 180 degrees. If two angles are known, subtract their sum from 180 to find the third angle.

Front

What condition must be met for two lines to be parallel?

Back

Two lines are parallel if they have the same slope or if they are both vertical or horizontal.

Front

What is a kite in geometry?

Back

A kite is a quadrilateral with two distinct pairs of adjacent sides that are equal in length.

Front

How do you calculate the area of a parallelogram?

Back

The area of a parallelogram is calculated by multiplying the base by the height (Area = base × height).

Front

What is the significance of the circumradius in a triangle?

Back

The circumradius is the radius of the circumcircle, which is the circle that passes through all three vertices of the triangle.

Front

What is the relationship between the diagonals of a kite?

Back

In a kite, one diagonal bisects the other diagonal at a right angle.

Front

How do you determine if two lines are perpendicular?

Back

Two lines are perpendicular if the product of their slopes is -1.

Front

What is the formula for the sum of 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 degrees.