RS Aggarwal Vikash Aggarwal Class 5 Activity Book Composite Mathematics Activity Sheet 101 Solution

(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.

Updated: January 23, 2019 — 2:07 pm