9514 1404 393
Answer:
CPCTC
Step-by-step explanation:
The applicable reason for statement 4 is "Corresponding Parts of Congruent Triangles are Congruent (CPCTC)".
The reason shown in your problem statement is applicable only within one triangle. The segments of interest are in two different triangles.
1.9+n
2.10+6
3.2+10
4.17
5.3+3
6.-3+n
The third one.... is obtuse because it is greater than a 90 degree angle , which is a right angle
Answer:
To find the left triangle we make the two right triangles equal 1 square, making the area of that 2x2 or 4
Then we take the uppermost triangle on the left and find the area of that which is 2x2 / 2 or 2. Then we find the right uppermost triangle which is 5x 2 /2 or 5. Then we take the rightmost triangle and find that 4x 4 /2 or 8. Then we add the square in the middle which is 3 x 4 or 12.
Add those area 4 + 2 + 5 + 8 + 12. You should get 31.
Hope that helps somewhat. You need to divide the shape into easily usable shapes like squares and triangles.
The other angle is adjacent to 55 degrees which means:
55+x=180
x=125 so it 125 degrees
