Question
The figures are not drawn to scale. Figure 1 shows a rectangular piece of paper MPQS that measures 21 cm by 13 cm. MN = RQ = 4 cm. The paper is folded along the dotted line NR such that point P touches point S, as shown in Figure 2.
  1. Find the area of Figure 2. MNRQS, after the folding. 
  2. In Figure 2, ∠MNS is 73°. Find ∠NRQ in Figure 2.
4 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

The figures are not drawn to scale. Figure 1 shows a rectangular piece of paper MPQS that measures 21 cm by 13 cm. MN = RQ = 4 cm. The paper is folded along the dotted line NR such that point P touches point S, as shown in Figure 2.
  1. Find the area of Figure 2. MNRQS, after the folding. 
  2. In Figure 2, ∠MNS is 73°. Find ∠NRQ in Figure 2.