Triangles

Question 0

Isosceles Triangle

Answer 0

Two sides are the same length, and the angles facing those sides are equal

Question 1

Equilateral Triangle

Answer 1

All interior angles are 60 deg and all the sides are the same length

Question 2

Right Triangle

Answer 2

Contains a 90 def angle. The sides forming the 90deg angle are the legs; the side facing the 90deg angle is the hypotenuse

a sq + b sq = c sq

Question 3

Special right triangle #1

3:4:5 Triangle

Answer 3

Side lengths are in a ratio 3:4:5

Look out for multiples of 3:4:5!!!!!!

Question 4

Special right triangle #2

5:12:13 triangle

Answer 4

Side lengths are in a ratio 5:12:13.

Look out for multiples of 5:12:13!!!!!

Question 5

Special right triangle #3

45* - 45* - 90* right triangle

Answer 5

• Isosceles right triangle
• Side lengths are in ratio 1:1: ✔️2
• Legs have the same lengths
• Look out for multiples!!
• Isosceles triangle is formed when a square is divided in half by one of it’s diagonals

Question 6

Special right triangle #4

30* - 60* - 90* right triangle

Answer 6

Side lengths are 1 : ✔️3 : 2

When an equilateral triangle is cut in half, the result is a 30* - 60* - 90*