No, not if it is a randomly-drawn 8-vertex shape. Octagons only have all- obtuse angles if it is a regular octagon, like the shape of a stop sign.
It depends on they type of arrowhead you have. If it is a arrowhead in the shape of a directional arrow, there are no obtuse angles. The most possible obtuse angles is 1.
parallelogram
pentagon
An octahedron is a closed 3-d shape with 8 polygonal faces. There are 257 topologically different convex octahedra. In addition there are concave octahedra. Some of these will have no obtuse angles, others will have several.
No, not if it is a randomly-drawn 8-vertex shape. Octagons only have all- obtuse angles if it is a regular octagon, like the shape of a stop sign.
Hexagon
Yes the interior angles of a regular octagon are obtuse.
The angles are obtuse angles. The stop sign is octagonal in shape. Assuming it is a regular octagon, then: exterior_angles = 360o ÷ 8 = 45o -> interior angle = 180o - 45o = 135o
octagon
There are no angles they are all obtuse angles
2 obtuse and 2 acute in the classic kite shape.
It depends on they type of arrowhead you have. If it is a arrowhead in the shape of a directional arrow, there are no obtuse angles. The most possible obtuse angles is 1.
There is no three-sided shape with two obtuse angles, because the three interior angles of a three-sided shape, which is a triangle, add up to 180 degrees, and two obtuse angles would be over 180 degrees.
a pentagon
A regular octagon has 8 interior obtuse angles.
Yes a regular 8 sided octagon has 8 interior obtuse angles of 135 degrees.