The yield signs on highways are equilateral.
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A pennant is a real life example of an isosceles triangle.
The roof truss of a building with a low ridge roof.
A real life example is a gnomes hat, pizza slice, cake slice, IDK what a pennant is , but the previous person who wrote this wrote pennant so i guess penant :P and my last example is a pumpkin when u draw those triangles in it, your welcome :) .. oh ! and a flag , i think guyanas flag has isosceles triangle ^.^ A pennant is one of those isosceles-triangle shaped flags.... google it. thanks tho :) i needed this for school.
a real life example of an octagon is a stop sign.
Look in a mirror for an example of a reflection. Lift your right hand, and watch your left hand lift in the mirror, or so it appears!In geometry, reflection is a mirror image of a shape, etc.For example: the triangle b is the reflection of triangle a.▲ a▼ b