Rectangle, octagon, hectagon, square...
All triangles that are not right triangles.
a circle
An acute triangle.
A circle.
An equilateral triangle, which has 3 angles of 60o.
Circle, cone, cylinder, sphere and equilateral triangle for example.
Angles are measured in degrees, minutes and seconds A full rotation measures 360 degrees
An angle that measures 35 degrees is called an acute angle. Acute angles are angles that are less than 90 degrees. They are commonly found in geometric shapes such as triangles and rectangles. In this case, the 35-degree angle would be classified as an acute angle.
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)
When the sum of two adjacent angles is 180 degrees, they are referred to as supplementary angles. These angles share a common vertex and a side, lying next to each other. In geometric terms, if angle A and angle B are adjacent and their measures add up to 180 degrees, then A + B = 180°. This relationship is commonly observed in straight angles and many geometric figures.