Pythagorean theorem and special right triangles

a = 2.1, b = 7.2,
c = 7.5
Is this a right triangle?

• yes 
• no

Find the measure of h.

• 13
• 20
• 9.7
• 10

The lengths of a triangle are given below. Is the the triangle obtuse, acute, or right?
4, 5, 6

• right
• obtuse
• acute

The lengths of a triangle are given below. Is the the triangle obtuse, acute, or right?
11, 12, 15

• right
• obtuse
• acute

10, 12, 13

• acute
• right
• obtuse
• not a triangle

2, 12, 13

• acute
• right
• obtuse
• not a triangle

What type of special triangle is this?

• 45°-45°-90°
• 30°-60°-90°
• Equiangular
• Equilateral

What type of special triangle is this?

• 45°-45°-90°
• 30°-60°-90°
• Isosceles
• Obtuse

Find x.

• 10
• √3
• 5
• 10√3

Find x.

• 4
• 2
• √3
• 2√2