Why a² + b² = c²: squares on the sides

Answer Key - Grade 8 Math Worksheet - Challenge Me

Circle the best answer, or write your answer on the line.

1. 1.

   Noah draws a right triangle on grid paper, legs 1 cm and 4 cm, then the square on its hypotenuse. That square comes out tilted. What is its area, in square cm?

   17
2. 2.

   Pia sketches a right triangle on grid paper with legs 2 cm and 5 cm. The square on its hypotenuse is tilted. What is that square's area, in square cm?

   29
3. 3.

   Tala's robot draws a right triangle on grid paper, legs 2 cm and 7 cm, and a tilted square on its hypotenuse. What is that square's area, in square cm?

   53
4. 4.

   Zee measures a right-triangle corner of the school garden for square herb beds, one on each side. What is the area of the bed on the hypotenuse, in square meters?

   2.25
5. 5.

   Bo measures a right-triangle sunflower plot with a square bed on each side. What is the area of the bed on the hypotenuse, in square meters?

   42.25
6. 6.

   Not to scale. Jun has three paper squares that fit the sides of a right triangle. Two of them are labeled. What is the area of the unlabeled square, in square cm?

   64
7. 7.

   Noah's math book labels a right triangle with letters. Which equation is true for the squares on its sides?

   • d² + f² = g²
   • d + f = g
   • f² + g² = d²
   • d² + g² = f²
8. 8.

   Pia labels the sides of a right triangle q, s and u in pencil. Which equation is true for the squares on its sides?

   • q² + u² = s²
   • s² + u² = q²
   • q² + s² = u²
   • q + s = u
9. 9.

   Ren's book shows a right triangle turned on its side, labeled with letters. Which equation is true for the squares on its sides?

   • w² + y² = v²
   • w² + v² = y²
   • y² + v² = w²
   • w + y = v
10. 10.

    Tala labels a paper right triangle with the letters h, x and d. Which equation is true for the squares on its sides?

    • h² + x² = d²
    • h + x = d
    • h² + d² = x²
    • x² + d² = h²