Sides
When do 3 sides make a triangle?
When you add up 2 of the smallest sides and the sum is bigger than the third side.
How many degrees is in a triangle?
180 degrees
What type of triangle has all three sides the same?
Equilateral
What type of triangle has a right angle?
Right Triangle
Do these 3 sides make a triangle? Explain.
5in, 9in, 3in
No, because 5+3 = 8, which is smaller than 9.
Do these angles make a triangle? Show work.
53 degrees, 27 degrees, 100 degrees
Yes, because 53 + 27 + 100 = 180
What type of triangle has all three sides different?
Scalene
What type of triangle has all the angles smaller then 90 degrees?
Acute triangle
Do these 3 sides make a triangle? Explain.
12 feet, 3 feet, 13 feet
Yes, because 3 + 12 = 15, which is bigger than 13.
Do these angles make a triangle?
90 degrees, 58 degrees, 31 degrees
No, 90 + 58 + 31 = 179 degrees
What type of triangle has 2 sides the same?
Isoceles
What type of triangle has a angle bigger than 90 degrees?
Obtuse
Do these 3 sides make a triangle? Explain.
25m, 31m, 9m
Yes, because 9 + 25 = 34. 34m is bigger than 31m.
38 degrees, 38 degrees
104 degrees
What type of triangle is Miss Wulff holding?
Isoceles
What type of triangle did Miss Wulff draw?
Right triangle
Do these 3 sides make a triangle? Explain.
531cm, 248cm, 273cm
No, because 248+273 = 521. Which 521 is smaller than 531cm.
What is the missing angle?
113 degrees, 60 degrees
7 degrees
What type of triangle is Miss Wulff holding?
Scalene
What type of triangle did Miss Wulff draw?
Obtuse Triangle