RETAKE- Unit 1 Geometry

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 B is the midpoint of AC, and AB = x, what is the length of AC?

Back

AC = 2x.

Front

What is the sum of the angles in a triangle?

Back

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

Front

What is the definition of an angle?

Back

An angle is formed by two rays with a common endpoint called the vertex.

Front

How do you find the measure of an angle when given its expression?

Back

Substitute the value of the variable into the expression and simplify.

Front

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

Back

Distance = √((x2 - x1)² + (y2 - y1)²).

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 definition of supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

If m∠RST = (12x - 1)° and m∠RSU = (9x - 15)°, how do you find x?

Back

Set up the equation (12x - 1) + (9x - 15) + 53 = 180 and solve for x.

Front

What is the definition of vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect, and they are always equal.