(1) ans. Triangle
(2) ans. 180 degree
(3) ans. Different.
(4) ans. <A + <B = 60 degree + 70 degree = 130 degree, As we know triple angle measure 18 degree.
Therefore, <C = 180 degree – 130 degree = 50 degree.
(5) Solution: Triple angle measure = 180 degree.
Right angle triangle, one angle = 90 degree
One acute angle = 36 degree
The other acute angle is 90 – 36 = 54 degree.
(6) Solution: The measure of the third angle is 180 degree – (45 degree + 67 degree)
= 180 degree – 112 degree
= 68 degree.
(7) ans. Equal.
(8) ans. Scalene triangle.
(9) ans. Hypotenuse.
(10) ans. Base
(11) ans. As we know triple angle measure = 180 degree
Other two angle = 180 – 110 = 70 degree.
Each of the equal angle measure 70 / 2 = 35 degree.
(12) Solution: The measure of the two isosceles right triangle = 180 – 90 = 90 degree / 2 = 45 degree.
(13) Right triangle.
