Đố vui để học Toán

    Gãc bÑt Gãc bÑt sè 14 sè 14   !" # Giao ®iÓm cña ba ®êng cao Giao ®iÓm cña ba ®êng cao $%&'( $%&'( )*(+, )*(+, 80 80 -./&0)12 -./&0)12 !333#33!33 !333#33!33 TiÒn thøc ¨n : 35.000 ®ång TiÒn thøc ¨n : 35.000 ®ång TiÒn hoa qu¶ : 15.0000 ®ång TiÒn hoa qu¶ : 15.0000 ®ång 456789888:1;< 456789888:1;< /&9=.>1;>?> /&9=.>1;>?> /& 89888:9@> /& 89888:9@> 107 107 H×nh vu«ng H×nh vu«ng @+,A @+,A )*+,<(> )*+,<(> 0B 0B 88908684828078767472706866646260585654525048464442403836343230282624222018161412109876543210 CAD% CAD% E E PhÐp b×nh ph¬ng PhÐp b×nh ph¬ng 4 sè: 1,2,3,734 4 sè: 1,2,3,734 F.807 F.807 G7 G7 Träng t©m Träng t©m cña tam cña tam gi¸c gi¸c )*0+, )*0+, G.'(E G.'(E 4225 4225 -H2 -H2 I I 3 3 c«ng nh©n c«ng nh©n 'J+K&JLG'M% 'J+K&JLG'M% !8DNOG+6B& !8DNOG+6B& DH9PQG)GB#8&DH DH9PQG)GB#8&DH #88DN07M% #88DN07M% Tam gi¸c ®Òu Tam gi¸c ®Òu (E%:, (E%:, $% $% 88908684828078767472706866646260585654525048464442403836343230282624222018161412109876543210 R.><SL0L2 R.><SL0L2 ! 9# ! ! 9# ! Số Số 15 15 Hai góc kề bù Hai góc kề bù @'< @'< RT7 UVDW RT7 UVDW 0,1E 0,1E 111, 102, 120, 201, 210, 111, 102, 120, 201, 210, (!XY( (!XY( X>0T! X>0T! Phép lập phơng Phép lập phơng CAD%0E CAD%0E Số mới Số mới nhỏ hơn nhỏ hơn số ban đầu số ban đầu 4'+6;78Z:& 4'+6;78Z:& 8Z9[(Q+6<\ 8Z9[(Q+6<\ 0 0 Tam giác cân, tam giác đều Tam giác cân, tam giác đều ]X(-L+, ]X(-L+, G.:,D%(+, G.:,D%(+, $+, $+, 88908684828078767472706866646260585654525048464442403836343230282624222018161412109876543210 @D+?^'QD @D+?^'QD _E _E Hai ph¬ng tr×nh t¬ng ®¬ng Hai ph¬ng tr×nh t¬ng ®¬ng Giao ®iÓm 3 ®êng trung trùc Giao ®iÓm 3 ®êng trung trùc '()*0 '()*0 +,M(>0B* +,M(>0B* ( ( 2025 2025  -H2 " 6 6 -0'*( -0'*( 2!# 2!# sè 23 sè 23 2 2 8   ! "  8   ! "  2 cèc níc 2 cèc níc E<>(+\`>a + E<>(+\`>a + \:YG<9bNa"< \:YG<9bNa"< YG<.Da"9=YYG YG<.Da"9=YYG <.@cLG+\ <.@cLG+\ 88908684828078767472706866646260585654525048464442403836343230282624222018161412109876543210   1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 RESET OK        !"    !"    ! #$ "  %&#$ '(  ! #$ "  %&#$ '( 2 5 ) 7 7 9 9 3 3 4 4 8 8 1 1 30292827262524232221201918171615141312111009080706050403020100