Triangle Classification

Acute triangles- all three angles are acute (less than 90 degrees).
Right triangles- have one right angle and two acute angles.
Obtuse triangles- have one obtuse angle (greater than 90 degrees) and two acute angles.

 

Equilateral triangles- all three sides congruent sides.
Isosceles triangles- have at least two congruent sides.
Scalene triangles- all 3 sides different lengths.

 

Practice Problems

Classify the following triangles by their sides and angles.

\(\textbf{1)}\)
Triangle for Question Number 1

 

\(\textbf{2)}\)
Triangle for Question Number 2

 

\(\textbf{3)}\)
Triangle for Question Number 3

 

\(\textbf{4)}\)
Triangle for Question Number 4

 

\(\textbf{5)}\)
Triangle for Question Number 5

 

\(\textbf{6)}\)
Triangle for Question Number 6

 

\(\textbf{7)}\)
Triangle for Question Number 7

 

\(\textbf{8)}\)
Triangle for Question Number 8

 

\(\textbf{9)}\)
Triangle for Question Number 9

 

\(\textbf{10)}\)
Triangle for Question Number 10

 

\(\textbf{11)}\)
Triangle for Question Number 11

 

\(\textbf{12)}\)
Triangle for Question Number 12

 

 

See Related Pages\(\)

\(\bullet\text{ Geometry Homepage}\)
\(\,\,\,\,\,\,\,\,\text{All the Best Topics…}\)
\(\bullet\text{ Area and Perimeter of Triangles}\)
\(\,\,\,\,\,\,\,\,\)Thumbnail of Area and Perimeter of Triangles\(\,\, A=\frac{1}{2}bh, \,\, P=s_1+s_2+s_3…\)
\(\bullet\text{ Andymath Homepage}\)

Thumbnail of Andymath Homepage

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