Level 3
The figure shows a piece of rectangular paper ABCD folded at one of its corners D. ∠DEF = 16°. Find ∠DEC.
3 m
Level 3
The figure shows a piece of square paper ABCD folded at two of its corners B and D. Given that ∠CFD = 81° and ∠BEC = 78°, find ∠BCD.
3 m
Level 3
The figure shows a piece of rectangular paper ABCD folded at two of its corners C and D. ∠DFE is 6° larger than ∠CFG but it is half the size of ∠CFD. Find ∠CFD.
3 m
Level 3
The figure shows a piece of rectangular paper ABCD folded at one of its corners A. ∠AEB is 4 times as large as ∠AEF. Find ∠AEB.
3 m
Level 2
The figure is not drawn to scale. A rectangular piece of paper is folded to form the figure as shown. Find the area of the rectangular piece of paper before it was folded.
3 m
Level 2
The figure shows a piece of square paper with two of the corners folded. Triangle A and Triangle B are identical and Triangle XYZ is an equilateral triangle. Find the area of the shaded part.
3 m
Level 3
Figure A is a square with perimeter 64 m is folded into half as shown. What is the area of the new Figure B?
3 m
Level 3
A rectangular piece of paper, not drawn to scale, is folded as shown. What is the area of the piece of paper?
3 m
Level 3
A rectangular piece of paper is folded along the diagonal as shown in Figure B. It is folded again as shown in Figure C before the last fold in Figure D. If the angle is 62° in Figure D, what is ∠a?
3 m
Level 3
Two corners of a square are folded as shown in the figure. Find ∠ABC.
3 m