Classification of Triangles

1. ROMNE RYAN M. PORTACION
Teacher I

5. When three non collinear point
are joined. The shape is
called a TRIANGLE.
A
B C

7. If the lengths of all three sides of a
triangle are equal, the triangle is
called a
EQUILATERAL TRIANGLE.

9. If the lengths of two sides of a
triangle are equal, then
such a triangle is called
ISOSCELES TRIANGLE.

11. A triangle with all three sides of
different lengths is called a
SCALENE TRIANGLE.

12. ACUTE TRIANGLE
has all angles more than (0
degree) and less
than (90 degrees).

14. RIGHT TRIANGLE
has only one right angle
(90 degrees).

16. OBTUSE TRIANGLE
has one angle more than
(90 degrees) and
less than (180 degree).

20. Equilateral Isosceles Scalene
Acute Triangle Right Triangle
Obtuse Triangle

22. A. Classify the triangles by their congruent sides:
1. 2. 3. 4.
B. Classify the triangles by their interior angles:
5. 6. 7. 8.
c. Classify the triangles by their congruent sides and interior angles:
9. 10.