X^2=10
square root it
sqrt(x^2) = sqrt (10)
x= sqrt(10)
Cannot reduce more
Answer:
7
Step-by-step explanation:
70 is the area of the polygon
The answers are:
Top Left - equilateral triangle (all three sides are equal)
Top Right - scalene triangle (no sides are equal)
Bottom Left - right angle triangle (one right angle)
Bottom Right - obtuse angle triangle ( one obtuse angle)