![unnamed_edited.png](https://static.wixstatic.com/media/13acd3_92a20a39d8e445ecbd960de3278a1b8a~mv2.png/v1/fill/w_193,h_92,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/unnamed_edited.png)
EXERCÍCIO 3 - MOLUSCOS BIVALVES
EXERCÍCIO 3.1 - MEXILHÃO
Começa-se por criar um retângulo de 7un por 20un e dentro dele divide-se quaro retângulos com as medidas que mosta na figura ao lado.
No quadrado de 2x2 faz-se uma circunferência e utiliza-se o comando trim para cortar a parte da circunferência que fica fora do quadrado.
Para os restantes retângulos em fez de circunferência constroem-se elipses que assim como a lógica da circunferência vão sufrendo cortes de modo a no final obtemos a primeira geratriz (linha encarnada).
![1.png](https://static.wixstatic.com/media/13acd3_7851c5d713eb42cdb6ff3c78e6c50c62~mv2.png/v1/crop/x_0,y_41,w_364,h_490/fill/w_356,h_479,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/1.png)
![4.png](https://static.wixstatic.com/media/13acd3_b4a8c9a7960346b6abd6d16018a92897~mv2.png/v1/crop/x_80,y_0,w_616,h_532/fill/w_472,h_407,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/4.png)
Imagem 1
Imagem 3
![2.png](https://static.wixstatic.com/media/13acd3_871f077b77a24e7dbb1f899f499beb82~mv2.png/v1/crop/x_0,y_36,w_349,h_301/fill/w_305,h_263,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/2.png)
Imagem 2
Neste passo é necessário criar um pequeno círculo auxiliar (Imagem 2) e faz-se um "extend" para a linha auxiliar se extender até ao final do círculo.
onde a linha intersecta com o círculo constrói-se uma linha vertical com 5un e do topo dessa linha faz-se outra que vai até ao ponto médio da primeira linha auxiliar, como mostra na Imagem 3.
Neste momento cria-se uma curva cónica com base em quatro pontos e assim obtemos o nosso MEXILHÃO.
![5.png](https://static.wixstatic.com/media/13acd3_972580ed6a144cd88e8e791ea76aa471~mv2.png/v1/crop/x_40,y_123,w_649,h_436/fill/w_85,h_57,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/5.png)
Imagem 4
![8.png](https://static.wixstatic.com/media/13acd3_2d983238b11845efbde3fefac6a6cde4~mv2.png/v1/fill/w_109,h_58,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/8.png)
Imagem 5
EXERCÍCIO 3.2 - AMÊIJOA
![1_edited.jpg](https://static.wixstatic.com/media/13acd3_36593231229e4bcb9c535bbd08edd1fd~mv2.jpg/v1/crop/x_0,y_0,w_416,h_444/fill/w_98,h_104,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/1_edited.jpg)
Imagem 1
![4.png](https://static.wixstatic.com/media/13acd3_f64ba15ffcc2449aab3056f094faa37b~mv2.png/v1/crop/x_0,y_24,w_346,h_298/fill/w_76,h_66,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/4.png)
Imagem 3
![2.png](https://static.wixstatic.com/media/13acd3_42aa9d25c8374567b95a519ddad669e0~mv2.png/v1/crop/x_0,y_47,w_487,h_420/fill/w_76,h_66,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/2.png)
Imagem 2
![6.png](https://static.wixstatic.com/media/13acd3_d8ac7cd1eaee4e44ab4c32c37c593c1b~mv2.png/v1/crop/x_0,y_57,w_406,h_236/fill/w_114,h_66,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/6.png)
Imagem 4
![7.png](https://static.wixstatic.com/media/13acd3_e0b6497d441c41c9979a348ca0b62f6e~mv2.png/v1/fill/w_109,h_53,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/7.png)
Imagem 5
![8.png](https://static.wixstatic.com/media/13acd3_e7630f647f1e4ae0852ba6492c613913~mv2.png/v1/fill/w_109,h_49,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/8.png)
Imagem 6
EXERCÍCIO 3.3 - VIEIRA
![1.png](https://static.wixstatic.com/media/13acd3_5f8e0671c952468a946a706b6b6a3f3e~mv2.png/v1/crop/x_0,y_11,w_502,h_534/fill/w_98,h_104,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/1.png)
Imagem 1
![4.png](https://static.wixstatic.com/media/13acd3_da315dbc45134de5984c0407a60f19f3~mv2.png/v1/crop/x_0,y_3,w_586,h_502/fill/w_77,h_66,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/4.png)
Imagem 3
![3.png](https://static.wixstatic.com/media/13acd3_51d96206c4784aa6860069f817ace9ab~mv2.png/v1/crop/x_32,y_0,w_419,h_361/fill/w_76,h_66,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/3.png)
Imagem 2
![7.png](https://static.wixstatic.com/media/13acd3_21bc3c564672471f8b1884f26d0121e0~mv2.png/v1/crop/x_81,y_18,w_386,h_491/fill/w_79,h_101,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/7.png)
Imagem 6
![6.png](https://static.wixstatic.com/media/13acd3_e9300c46de564dec8b8711751bee9d96~mv2.png/v1/fill/w_70,h_58,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/6.png)
Imagem 5
![5.png](https://static.wixstatic.com/media/13acd3_915a2ab57041470f88553b8844bba84e~mv2.png/v1/crop/x_0,y_48,w_445,h_259/fill/w_114,h_66,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/5.png)
Imagem 4
![9.png](https://static.wixstatic.com/media/13acd3_093757be8324466fbca1afb5de23dd22~mv2.png/v1/crop/x_74,y_0,w_741,h_583/fill/w_82,h_65,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/9.png)
Imagem 7
![10.png](https://static.wixstatic.com/media/13acd3_37a936374ba1463592b95fa2bf6d581b~mv2.png/v1/crop/x_101,y_0,w_520,h_352/fill/w_95,h_64,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/10.png)
Imagem 8
EXERCÍCIO 3.4 - OSTRA
![1.png](https://static.wixstatic.com/media/13acd3_d8018dc0b81d4563a775b5a3a4bc7959~mv2.png/v1/crop/x_0,y_0,w_534,h_472/fill/w_118,h_104,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/1.png)
Imagem 1
![3.png](https://static.wixstatic.com/media/13acd3_a4c2d7dee9c14c2394a6fe4ca88e9a9c~mv2.png/v1/crop/x_2,y_0,w_613,h_427/fill/w_94,h_66,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/3.png)
Imagem 3
![2.png](https://static.wixstatic.com/media/13acd3_f4d80d4486254c00b24e1445174be8e8~mv2.png/v1/crop/x_0,y_17,w_574,h_386/fill/w_76,h_51,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/2.png)
Imagem 2
![5.png](https://static.wixstatic.com/media/13acd3_02a56f422b454af8803c5b6454a1e239~mv2.png/v1/fill/w_88,h_58,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/5.png)
Imagem 5
![4.png](https://static.wixstatic.com/media/13acd3_1315edd60b2f4df68173ca837931e470~mv2.png/v1/crop/x_0,y_26,w_676,h_393/fill/w_114,h_66,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/4.png)
Imagem 4
![6.png](https://static.wixstatic.com/media/13acd3_1a188278edb046958080db49666eb956~mv2.png/v1/fill/w_81,h_58,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/6.png)
Imagem 6
![7.png](https://static.wixstatic.com/media/13acd3_a7ca7d88921d4853a8b80dbbc2a2e897~mv2.png/v1/fill/w_74,h_58,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/7.png)
Imagem 7
![10.png](https://static.wixstatic.com/media/13acd3_7dbcfb56e9964dda9d51574a3aa326d9~mv2.png/v1/crop/x_0,y_40,w_535,h_497/fill/w_99,h_92,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/10.png)
Imagem 8
![12.png](https://static.wixstatic.com/media/13acd3_66d689db0d654234a6ef543428ae833b~mv2.png/v1/crop/x_46,y_0,w_716,h_550/fill/w_120,h_92,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/12.png)
Imagem 9
![13.png](https://static.wixstatic.com/media/13acd3_ff14f502e92f488e8f9a1ec9d446af52~mv2.png/v1/fill/w_70,h_30,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/13.png)
Imagem 10