triangle and quadrilateral

With one angle that is greater than 90 degrees and 2 angles that are less than 90 degrees.

• Acute triangle

• Obtuse triangle

• Right triangle

with all angles measuring less than 90 degrees.

• acute triangle

• obtuse triangle

• right triangle

tell if it is isosceles, equilateral or scalene

Triangle with 3 unequal sides.

• equilateral triangle

• isosceles triangle

• scalene triangle

Triangle having 2 sides are equal.

• equilateral triangle

• isosceles triangle

• scalene triangle

A triangle having all sides are equal.

• equilateral triangle

• isosceles triangle

• scalene triangle

3 sided polygon

• triangle

• quadrilateral

• rectangle

It is a quadrilateral with a pair of opposite side that are parallel.

• trapezoid

• square

• rectangle

It is a parallelogram with 4 right angles and 4 equal sides.

• trapezoid

• square

• rectangle

It is a parallelogram with 4 right angles. Its opposite sides are equal.

• parallelogram

• rhombus

• rectangle