INTRODUCTION

Isosceles

by Amy Gunderson

Geometry rulez. Isosceles is the ultimate expression of the two things I love most about making knitwear: math and design. In this pullover tunic sweater, the stranded triangles begin dominantly black and transition like magic to white. To further the triangular sentiment, single color textured triangles are scattered across the upper part of body and sleeves. It’s like a party for triangles on this sweater, yo.

This sweater is knit seamlessly from the bottom up. The lower portion of Sleeves and Body employ the stranded knitting technique. For rounds that use both MC and CC1, carry both colors along throughout the round. For rounds that only use a single color, leave the unused color hanging at the beginning of the round. Trap any floats longer than 5 stitches long.

model: Amy Gunderson

photos: Rachel Brockman

SIZE

XS[S, M, L, 1X, 2X, 3X]
shown in size S with 6 inches/15 cm of positive ease

FINISHED MEASUREMENTS

Bust: 36.25[40, 43.75, 47.5, 51.5, 55.25, 59] inches/ 92[101.5, 111, 120.5, 131, 140.5, 150] cm
Length: 25[25.5, 26, 26.5, 27, 27.5, 28] inches/ 63.5[64.5, 66, 67.5, 68.5, 70, 71] cm

MATERIALS

Yarn
Fibra Natura Dona [100% extrafine superwash merino; 126yd/115m per 1.76 oz/50g ball]; color:
[MC] 132 Alabaster; 7[8, 9, 10, 11, 12, 13] balls
[CC1] 131 Onyx; 4[5, 5, 6, 6, 7, 7] balls
[CC2] 127 Real Teal; 1 ball

Recommended needle size
[always use a needle size that gives you the gauge listed below - every knitter's gauge is unique]
US #6/4mm circular needle 32-inch/80cm length or slightly shorter than finished bust circumference
US #6/4mm circular needle 16-inch/40cm length (optional, for Neck Edging)
US #6/4mm needles for small circumference in the round
US #7/4.5mm needles for small circumference in the round

Notions
yarn needle
stitch holders
4 stitch markers
2 removable stitch markers

GAUGE

21 sts/24 rounds = 4 inches/10 cm in stranded knitting using larger needle
21 sts/28 rounds = 4 inches/10 cm in Texture Triangles using smaller needle

Note: gauge is always taken after blocking.

PATTERN NOTES

[Knitty's list of standard abbreviations and techniques can be found here.]

Sssp: Slip 3 sts separately knitwise and slip sts back to LH needle. Purl these 3 sts together through the back of the loops. 2 sts dec'd.
K3tog: Knit next 3 sts together. 2 sts dec'd.

Broken Ribbing (worked over an even number of sts)
Rnd 1: Knit.
Rnd 2: *K1, p1; rep from * to end.
Rep Rnds 1-2 for patt.

Texture Triangles (multiple of 10 sts)
Rnd 1: *P5, k5; rep from * to end.
Rnd 2: *K1, p3, k6; repeat from * to end.
Rnd 3: *K2, p1, k7; repeat from * to end.
Rnd 4: *K5, p5; repeat from * to end.
Rnd 5: *K6, p3, k1; repeat from * to end.
Rnd 6: *K7, p1, k2; repeat from * to end.
Repeat Rnds 1-6 for pattern.

CHARTS

DIRECTIONS

SLEEVES (Make 2)
With CC2 and smaller needles for working small circumference in the round, CO 44[44, 46, 46, 48, 48, 50] sts. Pm and join to work in the round, being careful not to twist sts.

Knit 3 rnds.

Break CC2 and join CC1.

Work in Broken Ribbing for 13 rounds.
Next rnd: *K1, p1; rep from * to last 2 sts, kfb, p1. 45[45, 47, 47, 49, 49, 51] sts.

Change to larger needle(s).

Work Rnds 1-2 of Triangle Transitions Sleeve chart, beginning and ending where indicated for your size on chart.

Note: Read ahead! Side shaping is worked at the same time as the pattern changes.

Inc rnd: K1, m1, work next rnd of patt to last st, m1, k1. 2 sts inc'd.
Work 7[5, 5, 3, 3, 3, 3] rnds even in patt, working inc'd sts into pattt.
Rep last 8[6, 6, 4, 4, 4, 4] rnds 5[2, 9, 1, 5, 11, 17] times more.

Rep Inc rnd.
Work 9[7, 7, 5, 5, 5, 5] rnds even in patt, working inc'd sts into patt.
Rep last 10[8, 8, 6, 6, 6, 6] rnds 4[9, 4, 14, 12, 8, 4] times more. 67[71, 77, 81, 87, 91, 97] sts.

AT THE SAME TIME, once Rnd 51 of Triangle Transition Sleeve chart has been completed, change to smaller needles, break CC1 and continue with MC only, working in patt as foll and working all inc'd sts into patt:
Knit 1 rnd.
Work Rnds 1-6 of Texture Triangle patt 8 times, then rep Rnds 1-5 once more, aligning 10-st repeats over 10-st repeats of Triangle Transition Sleeve chart.

Next rnd: Patt to last 4[5, 6, 7, 8, 9, 10] sts, BO 8[10, 12, 14, 16, 18, 20] sts. 59[61, 65, 67, 71, 73, 77] sts rem.

Break yarn and place rem sts on holder.

BODY

With CC2 and smaller circ, CO 190[210, 230, 250, 270, 290, 310] sts. Pm and join to work in the round, being careful not to twist sts.

Knit 3 rnds.

Break CC2 and join CC1.

Work in Broken Ribbing for 14 rnds.

Change to larger circ.

Begin Triangle Transitions Chart:
Rnd 1: Work Rnd 1 of Triangle Transitions Chart across, working 10-st repeat a total of 19[21, 23, 25, 27, 29, 31] times across rnd.
Cont in patt as set until all 51 rnds of chart have been completed.

Break CC1 and cont with MC only. Change to smaller circ.

Knit 1 rnd.

Work Rnds 1-6 of Texture Triangles patt 8 times, then repeat Rnds 1-5 once more.

Next rnd: Patt 91[100, 109, 118, 127, 136, 145] sts for Back, BO next 8[10, 12, 14, 16, 18, 20] sts, patt until there are 87[95, 103, 111, 119, 127, 135] sts on ndl after last BO for Front, BO next 8[10, 12, 14, 16, 18, 20] sts. Slip resulting st back to LH ndl. 87[95, 103, 111, 119, 127, 135] sts rem each for Front and Back. Place sts on holder or spare ndl.

Yoke
Next rnd: With smaller circ, join MC to sts held for first Sleeve with RS facing. K2, work in Texture Triangle patt as est to last 2 sts, k2, pm; working across held Back sts: k2, patt to last 2 sts, k2, pm; across sts held for second Sleeve: k2, patt to last 2 sts, k2, pm; working across held Front sts: k2, patt to last 2 sts, k2. Pm for beg of rnd and join to work in the rnd. 292[312, 336, 356, 380, 400, 424] sts.
This rnd establishes patt of Texture Triangle patt, with 2 sts each side of raglan markers worked in St st.

Next rnd: *K2, patt to 2 sts before m, k2, sl m; rep from * 3 times more.

Raglan Dec Rnd: *K1, ssk, patt to 3 sts before m, k2tog, k1, sl m; rep from * 3 times more. 8 sts decreased.
Work 3 rnds even in patt.

Body Dec Rnd: *Sl m, patt to next m, sl m, k1, ssk, patt to 3 sts before m, k2tog, k1; rep from * once more.
Work 1 rnd even in patt.
Work Raglan Dec Rnd.
Work 1 rnd even in patt.
Rep last 4 rounds 4[5, 6, 7, 7, 7, 7] times more. 224[232, 244, 252, 276, 296, 320] sts: 65[69, 73, 77, 85, 93, 101] sts each for Front and Back; 47[47, 49, 49, 53, 55, 59] sts for each Sleeve.

Work Raglan Dec Rnd.
Work 1 rnd even in patt.
Rep last 2 rounds 7[7, 8, 8, 10, 11, 11] times more. 160[168, 172, 180, 188, 200, 224] sts: 49[53, 55, 59, 63, 69, 77] sts each for Front and Back; 31[31, 31, 31, 31, 31, 35] sts for each Sleeve.

Size 3X Only
Work Raglan Dec Rnd.
Work Body Dec Rnd.
Rep last 2 rnds once more. 200 sts: 69 sts each for Front and Back; 31 sts for each sleeve.

All sizes
Rep Body Dec Rnd 0[0, 1, 2, 4, 6, 6] times more. 160[168, 168, 172, 172, 176, 176] sts rem: 49[53, 53, 55, 55, 57, 57] sts each for Front and Back; 31 sts for each Sleeve.

Break yarn.

Shape neck:
Place removable markers on either side of center 13[17, 17, 19, 19, 21, 21] Front sts.

Row 1 [RS]: BO 13[17, 17, 19, 19, 21, 21] center Front sts (leaving 1 st after BO on RH ndl), k2tog, *patt to 3 sts before m, k2tog, k1, sl m, k1, ssk; rep from * 3 times more, patt to last 3 sts, ssk, k1. 137[141, 141, 143, 143, 145, 145] sts; 29 sts for each Sleeve, 47[51, 51, 53, 53, 55, 55] Back sts, 16 sts for each Front.

Row 2 [WS]: P1, ssp, *patt to 3 sts before m, ssp, p1, sl m, p1, p2tog; rep from * 3 times more, patt to last 3 sts, p2tog, p1. 10 sts dec'd.
Row 3 [RS]: K1, k2tog, *patt to 3 sts before m, k2tog, k1, sl m, k1, ssk; rep from * 3 times more, patt to last 3 sts, ssk, k1. 10 sts dec'd.
Rep Rows 2-3 twice more. 77[81, 81, 83, 83, 85, 85] sts: 17 sts for each Sleeve, 35[39, 39, 41, 41, 43, 43] Back sts, 4 sts for each Front.

Next row [WS]: Sssp, p1, sl m, p1, p2tog, *patt to 3 sts before m, ssp, p1, sl m, p1, p2tog; rep from * once more, patt to 3 sts before m, ssp, p1, sl m, p1, p3tog. 67[71, 71, 73, 73, 75, 75] sts: 15 sts for each Sleeve, 33[37, 37, 39, 39, 41, 41] Back sts, 2 sts for each Front.

BO all sts in patt.

A: Body circumference: 36.25[40, 43.75, 47.5, 51.5, 55.25, 59] inches / 92[101.5, 111, 120.5, 131, 140.5, 150] cm
B: Body length: 18 inches / 20.5 cm
C: Upper arm circumference: 12.75[13.5, 14.75, 15.5, 16.5, 17.25, 18.5] inches / 32.5[34.5, 37.5, 39.5, 42, 44, 47] cm
D: Back Neck Width: 6.25[7, 7, 7.5, 7.5, 7.75, 7.75] inches / 16[18, 18, 19, 19, 19.5, 19.5] cm
E: Raglan Length: 7.25[7.75, 8.75, 9.5, 10.25, 10.75, 11.5] inches / 18.5[19.5, 22, 24, 26, 27.5, 29] cm
F: Sleeve Length: 18 inches / 20.5 cm
G: Cuff circumference: 8.5[8.5, 8.75, 8.75, 9.25, 9.25, 9.5] inches / 21.5[21.5, 22, 22, 23.5, 23.5, 24] cm

FINISHING

Sew underarm seam. Block piece to finished measurements.

Neck Edging
With 16-inch / 40 cm circular needle and CC1, pick up and knit 33[37, 37, 39, 39, 41, 41] sts along Back neck, 15 sts along Left Sleeve, 8 sts along side of Front Neck, 13[17, 17, 19, 19, 21, 21] sts along Front Neck BO edge, 8 sts along other side of Front neck, and 15 sts along Right Sleeve. 92[100, 100, 104, 104, 108, 108] sts. Pm and join to work in the round.

Beg with Rnd 2, work in Broken Ribbing for 2 inches / 5 cm, ending after Rnd 2 of patt.

Switch to CC2 and knit 3 rnds.

BO all sts knitwise.

Block Neck Edging and weave in ends.

ABOUT THE DESIGNER

Amy Gunderson is creative director for Universal Yarn by day and dog cuddler by night. She also does a variety of freelance knit and crochet design, tech editing, and design work. Amy also loves to sew, weave, and do other assorted crafty and arty things and is constantly frustrated by the lack of time in which to do all of them.

She lives in Charlotte, NC with her husband, Kirk, and their adorable dogs, Suzy and Charli. Find her on Ravelry.

Pattern & images © 2018 Amy Gunderson.