Answer:
a) acute triangle
b) obtuse triangle
c) right-angled triangle
d) equilateral
e) isosceles, right-angled triangle
Step-by-step explanation:
- If all the angles in the triangle are less than 90°, it is an acute triangle
- If one angle in the triangle is a right angle, then it is a right-angled triangle
- If at least one angle is above 90°, it is an obtuse triangle
- If all the sides of the triangle are equal, it is an equilateral triangle
- If two sides of the triangle are equal, it is an isosceles triangle
- If no sides of the triangle are the same length, it is a scalene triangle
Hope this helps!
