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Across

The line that divides something into two equal parts.

A triangle in which all three sides are equal. All three internal angles are also congruent to each other and are each 60

Triangles are congruent if all three sides in one triangle are congruent to the corresponding sides in the other. (side-side-side)

Are created where transversal crosses two(usually parallel) lines. Each pair of these angles are outside the parallel lines and opposite side of the transversal

Are one of the most common and intersecting angles in all the geometry. It even has its own angle symbol.

The trigonometric function that is equal to the ratio of the side opposite a given angle( in a right triangle) to the hypotenuse.

Exactly equal in size and shape

These are when two lines are crossed by another line(the transversal) a pair of angles- on each of those two lines-on opposite sides of the transversal but inside those two lines

Each of the pairs of opposite angles made by two intersecting lines

A portion of the circumference of a circle a closed segment of a differentiable curve.

A relation that holds between two values when they are different. The notation a = b means that a is not equal to b.

A straight line or plane that touches a curve or curved surface at a point but if extended does not cross it at that point

Either of two angles whose sum is 90

Two geometrical objects-if they have the same shape, or one has the same shape as the mirror image of the other

Down

Corresponding parts of a congruent triangles are congruent. it is a succinct statement of a theorem regarding congruent trigonometry, defined as triangles either od which is an isometry of the other

The side of the right triangle that's opposite the 90 degree angle

Is a triangle that has two sides of equal length.

Either of two angles whose sum is 180

Are two angles that have a common vertex and a common side. The vertex angle is the endpoint of the rays that form the sides of the angle. The vertex point and the side are shared by the two angles.

Triangles are congruent if two pairs of corresponding angles and a pair of opposite sides are equal in both triangles(angle-angle-side)

An angle formed by two chords in a circle which have a common endpoint. this common endpoint forms the vertex of the inscribed angle.

When two lines are crossed by another line(which is called transversal) these are the angles in matching corners.

Triangles are congruent if any pair of corresponding sides and their included angles are equal in both triangles(side-angle-side)

Two lines on a plane that never meet. They are always the same distance apart.

Postulate states that two triangles are similar if they have two corresponding angles congruent. the sum of their angles of a triangle is always equal to 180

The trigonometric function that is equal to the ratio of the side adjacent to an acute angle (in a right-angled triangle) to the hypotenuse.

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