An illustration showing a straight angle. When the sides of an angle extend in opposite directions,…

An illustration showing acute, obtuse, straight, right, and reflex angles.

An illustration of two angles that are adjacent. They have the same vertex and a common side between…

An illustration showing when one straight line meets another straight line and makes the adjacent angles…

Illustration that can be used to show supplementary angles. The angles form a straight line.

Arrow straighteners made from reindeer horns. Crafted during the Reindeer age.

"The street called Straight can be seen starting at the right foreground of the picture and extending…

Illustration of an axis of symmetry drawn with respect to a hexagon.

Illustration of an axis of symmetry drawn with respect to a hexagon.

"If used, the Optional Movement Lane Control sign shall be used for two or more movements from a specific…

"If used, the Optional Movement Lane Control sign shall be used for two or more movements from a specific…

"If used, the Optional Movement Lane Control sign shall be used for two or more movements from a specific…

Illustration of an axis of symmetry drawn with respect to a quadrilateral.

Illustration of a quadrilateral which has two adjacent sides equal and the other two sides equal. It…

"A draftsman's instrument for ruling parallel lines. It consists of a triangle so attached to a straight-edge…

"If used, the Directional Arrow auxiliary sign shall be mounted below the route sign in directional…

"If used, the Directional Arrow auxiliary sign shall be mounted below the route sign in directional…

"If used, the Directional Arrow auxiliary sign shall be mounted below the route sign in directional…