Triangle Properties and Classifications

This video tutorial covers the classification of triangles into equilateral, isosceles, scalene, and right triangles. It explains the properties of each type, such as side lengths and angle measures. The tutorial also demonstrates how to calculate the measure of a missing interior angle in a triangle, emphasizing that the sum of interior angles in any triangle is 180 degrees. Through examples, viewers learn to classify triangles and solve for unknown angles.

What is a triangle with all sides and angles equal called?

• Right Triangle

• Isosceles Triangle

• Equilateral Triangle

• Scalene Triangle

Tags

CCSS.4.G.A.2

Which type of triangle has two sides of equal length?

• Isosceles Triangle

• Equilateral Triangle

• Right Triangle

• Scalene Triangle

Tags

CCSS.4.G.A.2

In a scalene triangle, how many sides are of equal length?

• Three

• None

• Two

• One

What is the longest side of a right triangle called?

• Hypotenuse

• Leg

• Height

• Base

Tags

CCSS.8.G.A.5

What is the sum of the interior angles of any triangle?

• 180 degrees

• 90 degrees

• 270 degrees

• 360 degrees

Tags

CCSS.4.G.A.2

If a triangle has sides of different lengths, what type is it?

• Right

• Equilateral

• Isosceles

• Scalene

Tags

CCSS.4.G.A.2

How do you classify a triangle with two equal angles?

• Equilateral

• Scalene

• Isosceles

• Right

Tags

CCSS.8.G.A.5

If two angles of a triangle are 93° and 37°, what is the third angle?

• 50 degrees

• 60 degrees

• 70 degrees

• 80 degrees

Tags

CCSS.8.G.A.5

In a right triangle, if one angle is 53°, what is the other non-right angle?

• 67 degrees

• 57 degrees

• 47 degrees

• 37 degrees

Tags

CCSS.8.G.A.5

What is the measure of the missing angle in a triangle with angles 90° and 53°?

• 47 degrees

• 37 degrees

• 27 degrees

• 57 degrees

Tags

CCSS.8.G.A.5