Lesson on Triangles

4.6C Identify different types of triangles based on angles.

and by sides.

• Ms. Acosta

" Now your going to practice" 

Multiple Choice

What kind of triangle is this?

• Obtuse because it has 1 obtuse angle

• Right because it has 2 right angles

• Right because it has 1 right angle

• Acute because it has 2 acute angles

Multiple Choice

What type of triangle is this?

• Right Triangle

• Obtuse Triangle

• Acute Triangle

• Equilateral Triangle

Multiple Choice

What type of triangle is this?

• Isosceles Triangle ( only 2 sides are equal )

• Equilateral Triangle ( all 3 ANGLES are equal )

• Scalene Triangle ( No sides are the same )

• Right Triangle

Multiple Choice

Classify this triangle.

• obtuse

• right

• acute

Multiple Choice

Classify this triangle.

• right

• acute

• obtuse

Multiple Select

Select all acute triangles.

Multiple Choice

Which triangle is a right triangle?

Multiple Choice

What type of angle classifies the

triangle?

• obtuse

• acute

• right

• none of these

Multiple Choice

Classify the following triangle

• Isosceles triangle

• Equilateral triangle

• Scalene Triangle

Multiple Choice

Classify the following triangle

• Isosceles triangle

• Equilateral triangle

• Scalene triangle

Multiple Choice

Classify the following triangle

• Isosceles triangle

• Equilateral triangle

• Scalene triangle

Multiple Choice

Mrs. Adams ordered a giant slice of pizza. Her pizza slice had the following measurements:

6 inches, 6 inches, and 4 inches.

How would she classify her pizza slice?

• Equilateral triangle

• Isosceles triangle

• Scalene triangle

Multiple Choice

What type of triangle is this?

• Scalene

• Isosceles

• Equilateral

Multiple Choice

Classify the triangle by its sides.

• Equilateral

• Isosceles

• Scalene

Multiple Choice

Classify the triangle by its sides.

• Scalene

• Isosceles

• Equilateral

Multiple Choice

12. Which triangle is an equilateral triangle?

Multiple Select

Select the lengths that identify a scalene triangle. Mark all that apply.

• 2 inches, 2 inches, 3 inches

• 8 feet, 3 feet, 8 feet

• 2 inches, 3 inches, 4 inches

• 6 feet, 6 feet, 6 feet

• 5 feet, 7 feet, 8 feet

​Review your vocabulary.