Pythagorean Theorem to Classify Triangles

Find the missing side length.

• 4root(5)

• 4root(2)

• 10

• 8root(2)

What would you use to solve for x?

• Pythagorean Theorem

• Trig

• Inverse Trig

Which equation would be used to solve for x?

• x²+6²=8.5²

• sin(8.5)= x/6

• sin(8.5)= 6/x

• sin^-1(6/8.5)

Which equation would be used to solve for x?

• x²+31²=67²

• tan(31)= x/67

• 67²+31²=x²

• cos^-1(31/67)

The Pythagorean Theorem, a² + b² = c², only works for what type of triangles?

• acute

• right

• obtuse

• equilateral

Use Pythagorean Theorem to determine if the triangle is acute, right, or obtuse.

• acute

• right

• obtuse

If a² + b² = c², what type of triangle is the triangle?

• Right

• Obtuse

• Acute

• Irregular

Find the missing length indicated. Leave your answer in simplest radical form.

• 64

• 12

• 9

• 100

The number 18, 24, 30 represent the sides of a triangle. Classify as right, obtuse, or acute.

• right

• obtuse

• acute

Which set of side lengths does not form a right triangle?

• 38, 80, 90

• 16, 63, 65

• 36, 77, 85

• 14, 15, 29