A triangle face shape is narrower at the forehead and wider at the jawline. We spoke with beauty experts to give you their best advice for styling a triangle face shape , including flattering hairstyles, glasses, and makeup looks. Plus, we’ll tell you how to determine your face shape in case you’re not totally sure. Learn how to identify a triangle face shape with our comprehensive guide. Discover key measurements, styling tips, and expert comparisons to other face shapes . Perfect for men seeking clarity. Learn how to style a triangle face shape with the best haircuts, beard styles, moustaches and glasses. A triangle face shape has a wide jawline, narrow forehead and straight cheekbones. A triangle face shape , also known as a pear- shaped face , is characterized by a wider jawline and a narrower forehead. This facial structure creates a distinct triangular appearance, with the broadest area being the jaw and the narrowest part being the forehead.