triangles

Name this triangle.

• Right, Isosceles
• Scalene, acute
• Isosceles, acute
• Equilateral, obtuse

Name this triangle

• Acute, Scalene
• Obtuse, Scalene
• Right, Isosceles
• Acute, Equilateral

• acute

• obtuse

• right

• equilateral

• isosceles

• scalene

If all three angles are exactly the same measure, how big is each angle?
Hint:    x + x + x  = 180

• 180 degrees
• 90 degrees
• 50 degrees
• 60 degrees

Find the measure of the angle indicated. 

• 139°
• 66°
• 138°
• 116°

Tags

CCSS.8.G.A.5

In a triangle, how many total degrees are there?

• 100%
• 180 degrees
• it varies
• 360 degrees

Classify by side length

• Acute
• Isosceles
• Right
• Equilateral

Does a triangle with these side lengths exist?

15, 12, 9

• Yes

• No

Can the sides of a triangle have lengths 3, 4, and 9?

• Yes
• No