Angle properties of triangle Flashcards
1
Q
What is the sum of angles in a triangle?
A
180º
2
Q
What is the abbreviation for sum of angles in a triangle?
A
3
Q
Find angle x
A
x = (180 - 58)/2
= 61º
4
Q
Find angle y
A
y = 180 - 90 - 47
= 43º
5
Q
Find angle x
A
x = 180/3
= 60º
6
Q
Find angle x
A
x = 180 - 35 - 26
= 119º
7
Q
Find angle x
A
x = 180 - 29 - 29
= 122º
8
Q
Find angle y
A
y = 148 - 43 (exterior angle of triangle)
= 105º
9
Q
Find angle x
A
x = 90 + 53 (exterior angle of triangle)
= 143º
10
Q
Find angle x
A
Angle BCA = 56º (vertically opp angle)
x = 180 - 56 - 56
= 68º
11
Q
Find angle x
A
x = 180 - 141
= 39º
