Kinds of Triangles And Quadrilaterals

It is a right triangle has a right angle which

measures 90 degrees.

• acute triangle

• isosceles triangle

• obtuse triangle

• right triangle

It is a triangle has 2 equal sides. A

triangle in which at least two sides have equal measure.

• acute triangle

• isosceles triangle

• obtuse triangle

• right triangle

It is a triangle has no equal side or with

all three sides of different measures.

• acute triangle

• isosceles triangle

• obtuse triangle

• scalene triangle

It is a triangle has 3 equal sides

or all sides are equal.

• acute triangle

• equilateral triangle

• obtuse triangle

• scalene triangle

It is a triangle that has an obtuse angle which

measures more than 90 degrees.

• acute triangle

• equilateral triangle

• obtuse triangle

• scalene triangle

Opposite sides are parallel.

Opposites sides are equal.

Opposite angles are equal.

• Rectangle

• Parallelogram

• Rhombus

• Square

All sides are equal. Opposite angles are equal.

• Rectangle

• Parallelogram

• Rhombus

• Square

All sides are equal.

All angles are equal and measure 90°.

• Rectangle

• Parallelogram

• Rhombus

• Square

Has only one pair of opposite sides that are parallel.

Adjacent angles add up to 180°.

• Rectangle

• Parallelogram

• Rhombus

• Trapezoid

All sides are equal.

All angles are equal and measure 90°.

• Rectangle

• Parallelogram

• Square

• Trapezoid