Classifying Triangles

Master triangle classification by sides and angles! Practice identifying isosceles, scalene, equilateral, acute, right, and obtuse triangles.

Classify each triangle based on the length of the sides. Isosceles Triangle A triangle has the following side lengths: 5cm, 6 cm, and 5 cm. Scalene Triangle A triangle has one side length of 2 cm, one side length of 7 cm, and one side length of 5 cm. Equilateral Triangle A triangle with three side lengths of 8 cm. Fill in the blank to complete the sentences.Use the words: Scalene, equal, two An equilateral triangle has three equal sides.There are two congruent sides in an isosceles triangle.Scalene triangles have no equal sides. Sort the triangles by their sides. Click on the image and select the name of the triangle that matches it. Isosceles Equilateral Scalene Match each card into the category it goes into. Acute Triangle Right Triangle Obtuse Triangle What type of triangle is this? scalene acute isosceles obtuse isosceles acute Name the triangle Right Triangle Scalene Triangle Equilateral Triangle Name this triangle. acute right obtuse Scalene Triangle Isosceles Triangle Equilateral Triangle Scalene Triangle Equilateral Triangle Isosceles Triangle Scalene Triangle Isosceles Triangle Equilateral Triangle Matching Match each triangle with its description. sides: 4 cm, 4 cm, 4 cm equilateral triangle sides: 3 cm, 5 cm, 8 cm scalene triangle sides: 9 cm, 9 cm, 5 cm isosceles triangle angles: 45°, 45°, 45° acute triangle angles: 120°, 30°, 30° obtuse triangle angles: 90°, 45°, 45° right triangle