IS THIS ONLY ISOSCLESE

Question

ΔABC maps the outline of a new park. Select all the types of triangles that describe the park.

1. A.
2. scalene
3. 
   
4. B.
5. right
6. 
   
7. C.
8. isosceles
9. 
   
10. D.
11. equilateral
12. 
    
13. E.
14. acute

Answer 1

it's also a right triangle, as well as isosceles

if one angle =90 degrees, the triangle is a right triangle. Angle C=90. AC is perpendicular to BC.

it's not scalene. scalene means 3 unequal sides. An isosceles has 2 equal sides. AC = BC = sqr20 = 2sqr5

it's not acute, since Angle C =90 degrees. To be acute all angles must be less than 90. Angle A=Angle B=45 degrees

it's not equilateral. To be equilateral triangle has 3 equal sides. AB>AC and AB>BC

AB = 2sqr10 > 2sqr5. 6.32>4.47