diff --git a/kmath-geometry/src/commonMain/kotlin/space/kscience/kmath/geometry/angles.kt b/kmath-geometry/src/commonMain/kotlin/space/kscience/kmath/geometry/angles.kt
new file mode 100644
index 000000000..e7b0afcda
--- /dev/null
+++ b/kmath-geometry/src/commonMain/kotlin/space/kscience/kmath/geometry/angles.kt
@@ -0,0 +1,79 @@
+/*
+ * Copyright 2018-2021 KMath contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package space.kscience.kmath.geometry
+
+import kotlin.jvm.JvmInline
+import kotlin.math.PI
+
+public sealed interface Angle {
+    public fun toRadians(): Radians
+    public fun toDegrees(): Degrees
+
+    public operator fun plus(other: Angle): Angle
+    public operator fun minus(other: Angle): Angle
+
+    public operator fun times(other: Number): Angle
+    public operator fun div(other: Number): Angle
+    public operator fun unaryMinus(): Angle
+}
+
+/**
+ * Type safe radians
+ */
+@JvmInline
+public value class Radians(public val value: Double) : Angle {
+    override fun toRadians(): Radians = this
+    override fun toDegrees(): Degrees = Degrees(value * 180 / PI)
+
+    public override fun plus(other: Angle): Radians = Radians(value + other.toRadians().value)
+    public override fun minus(other: Angle): Radians = Radians(value - other.toRadians().value)
+
+    public override fun times(other: Number): Radians = Radians(value + other.toDouble())
+    public override fun div(other: Number): Radians = Radians(value / other.toDouble())
+    public override fun unaryMinus(): Radians = Radians(-value)
+}
+
+public fun sin(angle: Angle): Double = kotlin.math.sin(angle.toRadians().value)
+public fun cos(angle: Angle): Double = kotlin.math.cos(angle.toRadians().value)
+public fun tan(angle: Angle): Double = kotlin.math.tan(angle.toRadians().value)
+
+public val Number.radians: Radians get() = Radians(toDouble())
+
+/**
+ * Type safe degrees
+ */
+@JvmInline
+public value class Degrees(public val value: Double) : Angle {
+    override fun toRadians(): Radians = Radians(value * PI / 180)
+    override fun toDegrees(): Degrees = this
+
+    public override fun plus(other: Angle): Degrees = Degrees(value + other.toDegrees().value)
+    public override fun minus(other: Angle): Degrees = Degrees(value - other.toDegrees().value)
+
+    public override fun times(other: Number): Degrees = Degrees(value + other.toDouble())
+    public override fun div(other: Number): Degrees = Degrees(value / other.toDouble())
+    public override fun unaryMinus(): Degrees = Degrees(-value)
+}
+
+public val Number.degrees: Degrees get() = Degrees(toDouble())
+
+/**
+ * A holder class for Pi representation in radians and degrees
+ */
+public object Pi {
+    public val radians: Radians = Radians(PI)
+    public val degrees: Degrees = radians.toDegrees()
+}
+
+public object PiTimes2 {
+    public val radians: Radians = Radians(2 * PI)
+    public val degrees: Degrees = radians.toDegrees()
+}
+
+public object PiDiv2 {
+    public val radians: Radians = Radians(PI / 2)
+    public val degrees: Degrees = radians.toDegrees()
+}
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