diff --git a/KTMT/Lab3_1/2.asm b/KTMT/Lab3_1/2.asm
new file mode 100644
index 0000000..8c26c5e
--- /dev/null
+++ b/KTMT/Lab3_1/2.asm
@@ -0,0 +1,47 @@
+	.data
+nhapD:	.asciiz	"Nhap chieu dai: "
+nhapR:	.asciiz	"Nhap chieu rong: "
+xuatCV:	.asciiz	"\nChu vi: "
+xuatDT:	.asciiz	"\nDien tich: "
+dai:	.float	0
+rong:	.float	0
+cv:	.float	0
+dt:	.float	0
+	.text
+	.globl	main
+main:
+	#Nhap
+	la	$a0, nhapD
+	li	$v0, 4
+	syscall
+	li	$v0, 6
+	syscall
+	swc1	$f0, dai
+	la	$a0, nhapR
+	li	$v0, 4
+	syscall
+	li	$v0, 6
+	syscall
+	swc1	$f0, rong
+	#Xu ly
+	lwc1	$f1, dai
+	lwc1	$f2, rong
+	add.s	$f3, $f1, $f2
+	swc1	$f3, cv
+	mul.s	$f4, $f1, $f2
+	swc1	$f4, dt
+	#Xuat
+	la	$a0, xuatCV
+	li	$v0, 4
+	syscall
+	lwc1	$f12, cv
+	li	$v0, 2
+	syscall
+	la	$a0, xuatDT
+	li	$v0, 4
+	syscall
+	lwc1	$f12, dt
+	li	$v0, 2
+	syscall
+	li	$v0, 10
+	syscall
\ No newline at end of file
diff --git a/KTMT/Lab3_1/3.asm b/KTMT/Lab3_1/3.asm
new file mode 100644
index 0000000..0919ce3
--- /dev/null
+++ b/KTMT/Lab3_1/3.asm
@@ -0,0 +1,178 @@
+	.data
+xa:	.float	0
+ya:	.float	0
+xb:	.float	0
+yb:	.float	0
+xc:	.float	0
+yc:	.float	0
+a:	.float	0
+b:	.float	0
+c:	.float	0
+two:	.float	2.0
+inXA:	.asciiz	"Nhap xA: "
+inYA:	.asciiz	"Nhap yA: "
+inXB:	.asciiz	"Nhap xB: "
+inYB:	.asciiz	"Nhap yB: "
+inXC:	.asciiz	"Nhap xC: "
+inYC:	.asciiz	"Nhap yC: "
+outMax:	.asciiz	"(Cac) dinh co gia tri x lon nhat:\n"
+outErr:	.asciiz	"Ba diem da cho khong tao thanh tam giac!"
+outDT:	.asciiz	"Dien tich tam giac da cho la:\n"
+	.text
+	.globl	main
+main:	la	$a0, inXA
+	li	$v0, 4
+	syscall
+	li	$v0, 6
+	syscall
+	swc1	$f0, xa
+	la	$a0, inYA
+	li	$v0, 4
+	syscall
+	li	$v0, 6
+	syscall
+	swc1	$f0, ya
+	la	$a0, inXB
+	li	$v0, 4
+	syscall
+	li	$v0, 6
+	syscall
+	swc1	$f0, xb
+	la	$a0, inYB
+	li	$v0, 4
+	syscall
+	li	$v0, 6
+	syscall
+	swc1	$f0, yb
+	la	$a0, inXC
+	li	$v0, 4
+	syscall
+	li	$v0, 6
+	syscall
+	swc1	$f0, xc
+	la	$a0, inYC
+	li	$v0, 4
+	syscall
+	li	$v0, 6
+	syscall
+	swc1	$f0, yc
+	lwc1	$f1, xa
+	lwc1	$f2, xb
+	lwc1	$f3, xc
+	lwc1	$f4, ya
+	lwc1	$f5, yb
+	lwc1	$f6, yc
+	mov.s	$f27, $f1
+	mov.s	$f28, $f2
+	mov.s	$f29, $f3
+	jal	findM
+	la	$a0, outMax
+	li	$v0, 4
+	syscall
+	c.eq.s	$f1, $f26
+	bc1f	skipf1
+	mov.s	$f31, $f1
+	mov.s	$f30, $f4
+	jal	print
+skipf1:	c.eq.s	$f2, $f26
+	bc1f	skipf2
+	mov.s	$f31, $f2
+	mov.s	$f30, $f5
+	jal	print
+skipf2:	c.eq.s	$f3, $f26
+	bc1f	skipf3
+	mov.s	$f31, $f3
+	mov.s	$f30, $f6
+	jal	print
+skipf3:	mov.s	$f8, $f1
+	mov.s	$f9, $f4
+	mov.s	$f10, $f2
+	mov.s	$f11, $f5
+	jal	cal
+	swc1	$f7, c
+	mov.s	$f10, $f3
+	mov.s	$f11, $f6
+	jal	cal
+	swc1	$f7, b
+	mov.s	$f8, $f2
+	mov.s	$f9, $f5
+	jal	cal
+	swc1	$f7, a
+	lwc1	$f27, a
+	lwc1	$f28, b
+	lwc1	$f29, c
+	jal	findM
+	mov.s	$f15, $f26
+	jal	findm
+	mov.s	$f17, $f26
+	add.s	$f16, $f27, $f28
+	add.s	$f16, $f16, $f29
+	sub.s	$f16, $f16, $f15
+	c.le.s	$f16, $f15
+	bc1t	error
+	add.s	$f18, $f16, $f15
+	sub.s	$f16, $f16, $f17
+	lwc1	$f19, two
+	div.s	$f18, $f18, $f19
+	mov.s	$f19, $f18
+	sub.s	$f20, $f18, $f15
+	mul.s	$f19, $f19, $f20
+	sub.s	$f20, $f18, $f16
+	mul.s	$f19, $f19, $f20
+	sub.s	$f20, $f18, $f17
+	mul.s	$f19, $f19, $f20
+	sqrt.s	$f19, $f19
+	la	$a0, outDT
+	li	$v0, 4
+	syscall
+	mov.s	$f12, $f19
+	li	$v0, 2
+	syscall
+exit:	li	$v0, 10
+	syscall
+findM:	mov.s	$f26, $f27
+	c.le.s	$f28, $f26
+	bc1t	Mskip
+	mov.s	$f26, $f28
+Mskip:	c.le.s	$f29, $f26
+	bc1t	Mret
+	mov.s	$f26, $f29
+Mret:	jr	$ra
+findm:	mov.s	$f26, $f27
+	c.lt.s	$f28, $f26
+	bc1f	mskip
+	mov.s	$f26, $f28
+mskip:	c.lt.s	$f29, $f26
+	bc1f	mret
+	mov.s	$f26, $f29
+mret:	jr	$ra
+print:	li	$a0, '('
+	li	$v0, 11
+	syscall
+	mov.s	$f12, $f31
+	li	$v0, 2
+	syscall
+	li	$a0, ';'
+	li	$v0, 11
+	syscall
+	mov.s	$f12, $f30
+	li	$v0, 2
+	syscall
+	li	$a0, ')'
+	li	$v0, 11
+	syscall
+	li	$a0, '\n'
+	li	$v0, 11
+	syscall
+	jr	$ra
+cal:	sub.s	$f13, $f10, $f8
+	mul.s	$f13, $f13, $f13
+	sub.s	$f14, $f11, $f9
+	mul.s	$f14, $f14, $f14
+	add.s	$f7, $f13, $f14
+	sqrt.s	$f7, $f7
+	jr	$ra
+error:	la	$a0, outErr
+	li	$v0, 4
+	syscall
+	j	exit