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obtuse angle

An angle greater than 90 degrees


A straight path of point that goes on and on in two directions


An angle is a figure formed by two rays that have the same point

parallel lines

In a plane, lines that never intersect

perpendicular lines

Two intersecting lines that form a right angle

1 ray

A ray is part of a line that has one end point

acute angle

An acute angle is smaller than a right angle


A point is a an exact location in space


Closed place figure made up of line segments

line segment

A part of a line with two end points


5 sided figure

acute triangle

An acute triangle has three acute angles

equilateral triangle

triangle with three equal sides

Isosceles triangle

triangle with two equal sides

Intersecting lines

lines that cross at one point


a four sided polygon


an eight sided polygon


a six sided polygon


each line segment is a side

right angle

a right angle is a 90 degree angle

straight angle

an angle that is a straight line, 180 degrees


a three sided polygon


where two sides meet


an endless flat surface

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