14.1: Classify Triangles

Classify the triangle by its SIDES and ANGLES (check TWO BOXES).

• obtuse isosceles triangle

• acute equilateral triangle

• obtuse scalene triangle

• acute scalene triangle

Classify the triangle by its SIDES and ANGLES (check TWO BOXES).

• obtuse isosceles triangle

• acute equilateral triangle

• obtuse scalene triangle

• acute scalene triangle

Classify the triangle by its SIDES and ANGLES (check TWO BOXES).

• obtuse isosceles triangle

• acute isosceles triangle

• obtuse scalene triangle

• acute scalene triangle

Classify the triangle by its SIDES and ANGLES (check TWO BOXES).

• obtuse isosceles triangle

• acute isosceles triangle

• right scalene triangle

• right isosceles triangle

Classify the triangle by its SIDES and ANGLES (check TWO BOXES). NOTE: Pick the best name.

• equiangular equilateral triangle

• acute equilateral triangle

• acute scalene triangle

• equiangular isosceles triangle

Classify the triangle by its SIDES and ANGLES (check TWO BOXES). NOTE: Pick the best name.

• equiangular equilateral triangle

• obtuse scalene triangle

• acute scalene triangle

• obtuse isosceles triangle

A triangular garden has a 70º angle, a 30º angle, and an 80º angle. None of the sides have the same length. Classify the triangle by its ANGLES and its SIDES. (Check two boxes below)

• obtuse

• acute

• equilateral

• scalene

• isosceles

Your friend says both Newton and Descartes are correct. Is your friend correct? Explain.

The flag is made using identical fabric triangles. What is the perimeter of the flag (in inches). TYPE ONLY THE NUMBER (example of answer: 12)