Shapes and Angles in Geometry

Pentagon

• polygon

• circle

• triangle

• rectangle

Types of angles

• Acute

• Obtuse

• Reflex

• Straight

Scalene triangle

• All sides and angles are equal

• Two sides and two angles are equal

• Sides and angles different

• Only one angle is different

Sum of angles in a triangle

• @@90^@@

• @@180^@@

• @@360^0@@

• @@270^0@@

Hexagon

• polygon

• circle

• triangle

• rectangle

Equilateral triangle

• sides and angles equal

• only two sides equal

• all sides different

• one angle is 90 degrees

X-axis

• line on coordinate plane

• vertical line on coordinate plane

• diagonal line on coordinate plane

• horizontal line on coordinate plane

Y-axis

• line on coordinate plane

• horizontal line on coordinate plane

• diagonal line on coordinate plane

• vertical line on coordinate plane

Vertex of an angle

• where two rays meet

• the length of the angle

• the measure of the angle

• the type of angle

Polygon

• shape with straight sides

• a type of circle

• a three-dimensional figure

• a shape with curved sides