Level4-Unit1-Part2-Geometry

The two lines on the left intersect each other at a right angle which is 90°.

The two lines on the right are parallel which means they never cross.

The adjacent sides of a rectangle or perpendicular which means they meet at a 90° angle.

The opposite sides of a rectangle or equal in parallel which means they never cross.

The area of a rectangle is the length times the width.

A circle is a two dimensional figure with a radius and a circumference which is the distance around the circle.

The area of a circle is pi R squared where R is the radius and pi is the ratio of a circle circumference to its diameter.

A sphere is a three dimensional figure with a radius and volume which is 4/3 pi R cubed.

All points on the surface of a sphere are equidistant from it center.

A right triangle is a two dimensional figure with three sides to avoid your perpendicular to find its area multiply.

The length of the two perpendicular sides ANB and divide by two equals 1/2 a bee