3
It's a "tri"angle!
The 3 interior angles in any triangle add up to 180 degrees
There's no general rule. The only thing you can say about the angles ina quadrilateral is that all 4 of them always add up to 360 degrees.
obtuse angles are larger than 180 degrees. acute are smaller than 180. for example ina trangle, the exterior angles are obtuse and the inner angles are acute.
Angle A = A Angle B = 4A Angle C = 5A-11 Sum of angles in a triangle is 180o. 180 = A + B + C = A + 4A + 5A-11 = 10A - 11 10A = 191 A = 19.1o B = 4A = 76.4o C = 5A-11 = 84.5o
The number of sides of an n-sided polygon is also the number of angles of that polygon. Nonagons have 9 sides, so 9 angles.
Yes. In a non-trivial rhombus (ie one that is not a square), a pair of opposite angles is acute and the other pair is obtuse.
To the SQUARE of the hypothenuse. That's Pythagoras' Theorem.
10
0.001
4
1024
100 of them.