In the given figure, if the exterior angle is 135^o, then ∠P is

Number of acute angles in a right triangle are ____________.

$I n space a space r i g h t minus a n g l e d space t r i a n g l e comma space t h e space m e a s u r e space o f space o n e space a n g l e space i s space 90 degree. N o w comma space t h e space s u m space o f space a l l space t h e space a n g l e s space o f space a space t r i a n g l e space i s space 180 degree L e t apostrophe s space c o n s i d e r space t h e space t r i a n g l e space t o space b e space triangle A B C. H e n c e comma angle A space plus space angle B space plus space angle C space equals space 180 degree 90 degree space plus space space angle B space plus space angle C space equals space 180 degree space angle B space plus space angle C space equals space 180 degree space minus space 90 degree space angle B space plus space angle C space equals space 90 degree H e r e comma space n o space a n g l e space c a n space b e space 0 degree space i n space a space t r i a n g l e. space H e n c e comma space t h e space o t h e r space t w o space a n g l e s space o f space t h e space t r i a n g l e space w i l l space b e space a c u t e space a n g l e s.$

Number of acute angles in a right triangle are ____________.

The hypotenuse of a right triangle is 37 cm long. If one of the remaining two sides is 12 cm in length, then the length of the other side is

These triangles are congruent. If $angle straight E text is end text 45 degree text and end text angle straight B text is end text 55 degree text , end text angle straight C$ is

These two triangles are congruent. If $angle C space i s space 40 degree$ , then the measure of $angle F$ is

The triangle sum theorem states that the sum of the angles of a triangle equal how many degrees?

$angle A$ is called _________.

Are these triangles congruent? If so, why?

MathematicsGrade9

Do we have enough information to say these two triangles are congruent? If so, what allows us to say this?

Can the HL congruence theorem be used to prove the triangles congruent? If so, write a congruence statement.

Can the HL congruence theorem be used to prove the triangles congruent? If so, write a congruence statement.

State if the two triangles are congruent. If they are, state how you know.

If ∆ ABC and ∆ PQR are to be congruent, then name one additional pair of corresponding parts.

Complete the congruence statement: ∆ BCA =

Congruent triangles are triangles that have same size and shape. This suggests us that the corresponding sides are equal and corresponding angles are equal.
When two triangles are congruent, all of their corresponding sides and angles are equal.

Complete the congruence statement: ∆ BCA =

We want to show that $increment A R T space equals space increment P E N$ . We have to use SAS criterion. We have $angle T space equals space angle N$ , RT = EN, then____________.

SAS congruence is the term which is also known as Side Angle Side congruence. In this, triangles are congruent if any pair of corresponding sides and their included angles are equal in both triangles.

We want to show that $increment A R T space equals space increment P E N$ . We have to use SAS criterion. We have $angle T space equals space angle N$ , RT = EN, then____________.