Semester 1 Final review

Front

What is the formula to find the sum of the interior angles of a polygon?

Back

The formula is (n-2)180, where n is the number of sides in the polygon.

Front

If two angles are equal and their sum is 236 degrees, what are the measures of the angles?

Back

Each angle measures 118 degrees.

Front

Write an equation of a line PARALLEL to y=-6x-1 that goes through the point (1, 7).

Back

The equation is y=-6x+13.

Front

What is the measure of an angle if it is complementary to a 68-degree angle?

Back

The measure of the angle is 22 degrees.

Front

What postulate states that if two sides and the included angle of one triangle are equal to two sides and the included angle of another triangle, then the triangles are congruent?

Back

This is known as the SAS (Side-Angle-Side) postulate.

Front

What is the definition of a polygon?

Back

A polygon is a closed figure formed by a finite number of straight line segments.

Front

How do you find the slope of a line given two points (x1, y1) and (x2, y2)?

Back

The slope m is calculated as m = (y2 - y1) / (x2 - x1).

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 definition of complementary angles?

Back

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

Front

What is the formula for the area of a triangle?

Back

The area A of a triangle is given by A = 1/2 * base * height.