Ch. 9: Geometric Shapes and Angles

Front

What is a geometric shape?

Back

A geometric shape is a figure formed by points, lines, curves, and surfaces in a two-dimensional or three-dimensional space.

Front

Define the term 'angle'.

Back

An angle is formed by two rays (sides) that share a common endpoint (vertex).

Front

What is the formula for the area of a circle?

Back

The area of a circle is calculated using the formula A = πr², where r is the radius.

Front

What is the value of π (pi) approximately?

Back

π (pi) is approximately 3.14.

Front

How do you find the circumference of a circle?

Back

The circumference of a circle is found using the formula C = 2πr, where r is the radius.

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.

Front

What is the sum of angles in a triangle?

Back

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

Front

What is a radius?

Back

A radius is a line segment from the center of a circle to any point on its circumference.

Front

What is the area of a rectangle?

Back

The area of a rectangle is calculated using the formula A = length × width.

Front

What is the difference between a square and a rectangle?

Back

A square is a rectangle with all four sides of equal length.