May 13 - Triangles

Master triangle types & properties! Classify by sides/angles. Practice with fun worksheets.

Triangles Watch and learn about Triangles; then answer the questions that check your learning. There are 2 ways to classify triangles. They can be classified by their sides and by their angles. True False Name the triangle. right acute obtuse striaght Name the triangle. right acute obtuse straight Name the triangles. right acute obtuse straight Triangles always have at least _ acute angles. 1 2 3 4 An obtuse triangle can only have _ obtuse angle. 1 2 3 4 An acute triangle will have _ acute angles. 1 2 3 4 Matching If all three sides of a triangle are of equal length, we call that a _ triangle. equilateral A triangle with only 2 equal sides is a _ triangle. isosceles A triangle with all sides of different lengths is a _ triangle. scalene Name the triangle now by it sides. equilateral isosceles scalene Name the triangle by its sides. equilateral isosceles scalene Name the triangle. equilateral isosceles scalene No matter what the 3 angle measurements of a triangle are, if you combine them, they will always add up to _ degrees. 90 180 270 360 Since you now know that all 3 angles add up to 180 degrees, solve for the missing angle of the following triangle. 120 60 180 Since you now know that all 3 angles add up to 180 degrees, solve for the missing angle of the following triangle. 80 100 180 Since you now know that all 3 angles add up to 180 degrees, solve for the missing angle of the following triangle. HINT...the angle with the square is not missing, you know the value of that angle to be a specific number. 30 40 50 Remember, the key to get really good at math, is to DO IT! Great advice!