Question

a triangle having measure of all its angle less than 90 degree is called ???

Answer 1

Step-by-step explanation:

acute angles triangal

Answer 2

A triangle having the measure of all its angle less than 90 degrees is called an acute triangle.

• An acute angle is an angle less than 90°. For example, 30°, 35° and 45° are acute angles.
• A right-angle measures 90° (A triangle having an angle of 90° is called a right-angled triangle. We can only use the Pythagoras theorem in this triangle.)
• An obtuse angle is greater than 90° and less than 180°. For example, 120° and 130° are obtuse angles.