Geometry, Semester 1, Review

Front

What is the formula for the circumference of a circle?

Back

C = 2πr, where C is the circumference and r is the radius.

Front

What is the value of x in the equation 2x + 5 = 31?

Back

x = 13

Front

What is the inverse of the conditional statement: If a triangle has 3 congruent sides, then it's an equilateral triangle?

Back

If a triangle does not have 3 congruent sides, then it's not an equilateral triangle.

Front

What type of transformation is a rotation?

Back

A rotation is a transformation that turns a figure around a fixed point.

Front

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

Back

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

Front

What is the definition of a congruent triangle?

Back

Triangles that have the same size and shape, meaning all corresponding sides and angles are equal.

Front

What is the Pythagorean theorem?

Back

In a right triangle, a² + b² = c², where c is the hypotenuse.

Front

What is the area of a triangle?

Back

Area = 1/2 * base * height.

Front

What is a reflection in geometry?

Back

A reflection is a transformation that flips a figure over a line, creating a mirror image.

Front

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

Back

The sum is always 180 degrees.