Geometry

Question 1

Equation for Right Triangles (to fine hypotenuse or either of the legs) - Pythagorean Theorem

Answer 1

a^2 + b^2 = c^2

Question 2

Pythagorean triplets

Answer 2

3-4-5

5-12-13

Question 3

Circumference of a circle

Answer 3

2(pi)r

Question 4

Area of a circle

Answer 4

(pi)r^2

Question 5

Diameter of a circle

Answer 5

2r

Across the whole circle, in any way

Question 6

Radius of a circle

Answer 6

(1/2)d

Half way across the circle, half of the diameter

Question 7

Inscribed circle

Answer 7

Circle within a rectangle

Question 8

Properties of Squares

Answer 8

For any fixed diagonal , as for any fixed perimeter, the rectangle with the greatest area is a square. The rectangle closest to a square will have the greater area.

Question 9

Properties of a triangle

Answer 9

The sum of any two side lengths will always be greater than the third side length. This is because the shortest distance between any two points is a straight line. The third side will also always be greater than the difference of the other two side lengths.