Solving Side Lengths of Triangle

Find the length of the missing side. 

• 17 cm

• 22 cm

• 15 cm

• 13 cm

The Pythagorean Theorem works on which triangle?

• obtuse

• scalene

• isosceles

• right

• all triangles

Solve for the value of y

• 13

• 5

• 23

• 10

Find the length of the missing side.

• 20 in.

• 68 in.

• 16 in.

• 80 in.

Each of the sails on Joshua’s sailboat forms a triangle. The side lengths of one sail are 13, 17, and 20. What is the measure of each side of the sail?

*the largest angle is opposite the longest side length

• XY = 13, XZ = 20, YZ = 17

• XY = 17, XZ = 13, YZ = 20

• XY = 20, XZ = 17, YZ = 13

• XY = 13, XZ = 17, YZ = 20

Level 4

Solve for x.

• 38.9

• 40.2

• 45.6

• 54

What is the final step in solving this work for c?
a² + b² = c²
3² + 4² = c²
9 + 16 = c²
25 = c²

• Divide both sides by 2

• Take the square root of both sides

Does the set of numbers represent a right triangle?

• Yes

• No

Do these 3 side lengths form a right triangle?
13, 80, and 81?

• yes

• no