The two smallest numbers in a Pythagorean triad are $9$9 and $12$12.

Which number completes the triad?

$16$16

$15$15

$21$21

$225$225

The two smallest numbers in a Pythagorean triad are $8$8 and $15$15.

Consider the right-angled triangle.

Investigate Pythagoras’ Theorem and its application to solving simple problems involving right-angled triangles.