GREAT MINDS THINK ALIKE!

GEOMETRY

Different Angles

ACUTE ANGLES

An angle that measures LESS than 90 degrees.


Ex. Open Scissors

RIGHT ANGLES

An angle that measures exactly 90 degrees.


Ex. Chalk Board

OBTUSE ANGLE

Measures more than 90 degrees but less than 180 degrees


Ex. Lawn Chair

STRAIGHT ANGLE

Measures exactly 180 degrees


Ex. The ground

Last But Certainly Not Least Dr.Straight

( Straight Angle )

TYPES OF TRIANGLES

Acute Triangle

There are 3 acute angles in this triangle.

Right Triangle

There is 1 right angle in this triangle.

Obtuse Triangle

There are 1 obtuse angle and 2 acute angles in this triangle.

Scalene Triangle

There are NO congruent and NO angles are congruent in this triangle.

Isosceles Triangle

There are 2 congruent sides and 2 congruent angles.

Equilateral Triangle

There are 3 congruent sides and 3 congruent angles.

Learn More About Triangles

Quadrilateral Land

Quadrilateral

What is a quadrilateral you might ask, a quadrilateral is a 4 sided polygon and the sum of all the angles are 360 degrees.

Rectangle

A rectangle is a quadrilateral and all the sides are right angles = 90 degrees. The opposite sides are both congruent and parallel.

Rhombus

A rhombus is a quadrilateral and the opposite angles are congruent. The opposite sides are both parallel and congruent.