Understanding Triangles

This video from Minity Maths introduces the different types of triangles: right-angled, equilateral, isosceles, and scalene. It explains their properties, such as angles, sides, and lines of symmetry. Right-angled triangles have a 90-degree angle and a hypotenuse. Equilateral triangles have equal sides and angles of 60 degrees. Isosceles triangles have two equal sides and base angles, while scalene triangles have no equal sides or angles. The video concludes with practice questions.

Which of the following is NOT a type of triangle?

• Scalene

• Equilateral

• Right-angled

• Pentagonal

Tags

CCSS.8.G.A.5

What is the measure of each angle in an equilateral triangle?

• 60 degrees

• 45 degrees

• 90 degrees

• 120 degrees

In a right-angled triangle, what is the longest side called?

• Base

• Height

• Hypotenuse

• Diagonal

Tags

CCSS.4.G.A.2

How many equal sides does an isosceles triangle have?

• Three

• Two

• One

• None

Tags

CCSS.4.G.A.2

Which triangle has no equal sides or angles?

• Scalene

• Right-angled

• Isosceles

• Equilateral

Tags

CCSS.4.G.A.2