Someimes becasue either x or y could be obtuse.
Answer:
See below ~
Step-by-step explanation:
Classifying the triangles by sides and angles :
<u>Triangle ABC</u>
⇒ By Sides : Scalene (All sides are unequal)
⇒ By Angles : Right (There is a right angle = 90°)
============================================================
<u>Triangle GHI</u>
⇒ By Sides : Isosceles (2 sides are equal)
⇒ By Angles : Obtuse (One angle is greater than 90°)
============================================================
<u>Triangle DEF</u>
⇒ By Sides : Equilateral (All sides are equal)
⇒ By Angles : Acute (All angles are less than 90°)
284.13 grams
because you do 4.51 x 21 , then you have to multiply by 3
Answer:
c. 198 square feet
Step-by-step explanation:
Based on the picture I'm thinking the length of each line segment is 3ft, so each 'tile' on the surface of the figure is 9sqft.
Looking at the figure from the front and back you would see 4 tiles from each direction, same from the top and bottom (so far we have front + back + top + bottom = 4 + 4 + 4 + 4 = 16 tiles)
Looking directly from either side you would see 3 tiles each way, for 6 more tiles total, so the total number of tiles covering the figure is 16 + 6 = 22 tiles
Each tile is 9sqft, so total area is 22(9) = 198 sqft