Rectangle, octagon, hectagon, square...
All triangles that are not right triangles.
An acute triangle.
a circle
A circle.
An equilateral triangle, which has 3 angles of 60o.
Angles are measured in degrees, minutes and seconds A full rotation measures 360 degrees
Circle, cone, cylinder, sphere and equilateral triangle for example.
130 and 50 degrees.
Complementary angles are angles that add up to 90 degrees. If the smaller angle is x, the larger is 5x, so 6x = 90. X equals 15, and the larger angle measures 75 degrees.
120 (2/3 of 180)
112.5 degrees
2, obtuse and reflex angles are larger than right angles A straight angle is larger.