An acute angle is one whose measure is less than 90 degrees. An acute triangle, therefore, is a triangle whose three angles each measure less than 90 degrees.An equilateral triangle is a specific type of acute triangle where the three angles have an equal measure of 180Â° / 3 = 60Â°.A right angle, formed by two intersecting perpendicular lines, measures 90 degrees.n acute angle is one whose measure is less than 90 degrees. An acute triangle, therefore, is a triangle whose three angles each measure less than 90 degrees.
- In ionic compounds, metals and nonmetals are present. The electrons of the metal element are donated to the nonmetal element, forming an ionic bond. In molecular compounds two or more nonmetals share electrons, and form a covalent bond. - Ionic compounds are polar.
In the formation of an ionic compound, metals lose electrons and nonmetals gain electrons to achieve an octet. In this example, sodium loses one electron to empty its shell and chlorine accepts that electron to fill its shell. Ionic bonds are formed between ions with opposite charges.