Page 84 - NUMINO Challenge_B2
P. 84
Problem solving Key Points
1 A square is folded as shown below. Find the Triangles CEF and
measure of angle AEF. CDE are the same.
E
AD
F
40
BC
2 A piece of rectangular tape is folded as shown The measure of the
angle before and
below. Find the measure of angle . after folding is equal.
A EF G D
35
B HC
Shapes 81
1 A square is folded as shown below. Find the Triangles CEF and
measure of angle AEF. CDE are the same.
E
AD
F
40
BC
2 A piece of rectangular tape is folded as shown The measure of the
angle before and
below. Find the measure of angle . after folding is equal.
A EF G D
35
B HC
Shapes 81
